Consider the following statements.
1. The term of the Prime Minister is not fixed and he holds office during the pleasure of the president
2. This does not mean that the president can dismiss the Prime Minister at any time
3. So long as the Prime Minister enjoys the majority support in the Lok Sabha, he cannot be dismissed by the President
4. If he loses the confidence of the Lok Sabha, he must resign or the President can dismiss him
Which of these statements is/are correct?