In agreement to sale ,sale is made on same future date .ln hire purchase agreement possession of goods transfers to person after payment of last installment. and in case of bailment bailor gives the goods to bailee on the condition that he must return the goods after performance of specific act for which bailment is made.
because of all this reasons sale is different.

Introduction:
In this problem, we are given options A, B, C, and D, and we need to determine which option is different from the others when it comes to the concept of sale.
Explanation:
To solve this problem, let's understand the concepts related to each option and determine their differences.
Option A: Agreement to sell
- An agreement to sell refers to a contract where the seller agrees to transfer the ownership of goods to the buyer in the future, at a specific price and time.
- The ownership is not transferred immediately but will be transferred at a later date.
- Until the ownership is transferred, the seller remains the owner of the goods.
- This is different from an actual sale where ownership is transferred immediately.
Option B: Hire purchase
- Hire purchase refers to a type of agreement where the buyer takes possession of goods but pays for them in installments over a period of time.
- The ownership of the goods is transferred to the buyer only when the last installment is paid.
- Until then, the seller retains the ownership rights.
- This is different from a sale where ownership is transferred immediately after payment.
Option C: Bailment
- Bailment is a legal relationship where the owner of goods transfers their possession to another person temporarily, without transferring ownership.
- The person who receives the goods (bailee) has a duty to take care of the goods and return them to the owner (bailor) in the same condition.
- This is different from a sale because ownership is not transferred, and the bailee only has possession rights.
Option D: All of the above
- This option includes all the concepts mentioned above: agreement to sell, hire purchase, and bailment.
- If this option were correct, it would mean that all the concepts are different from each other, which is not the case.
- Therefore, option D cannot be the correct answer.
Conclusion:
After analyzing the options, we can conclude that the correct answer is option D, "All of the above."