Calculation:

Each letter of the alphabet has a corresponding numerical value in the English language. A is the first letter of the alphabet, so its numerical value is 1. M is the 13th letter of the alphabet, so its numerical value is 13. Z is the 26th letter of the alphabet, so its numerical value is 26.

To find the numerical value of BET, we add up the numerical values of each of its letters.

B = 2
E = 5
T = 20

2 + 5 + 20 = 27

But the question asks for the value of BET in relation to the values of A, M, and Z. We know that A = 2, M = 26, and Z = 52. Therefore, we need to subtract 2 from each of our calculated values to get the relative values.

27 - 2 - 2 - 2 = 21

Therefore, BET is equal to 21 in relation to A, M, and Z.

However, none of the answer options match this value. We need to keep in mind that the question is likely testing our ability to recognize a pattern. If we subtract 1 from the numerical value of each letter in BET, we get:

B = 2-1 = 1
E = 5-1 = 4
T = 20-1 = 19

1 + 4 + 19 = 24

Subtracting 2 from this value to get the relative value gives us:

24 - 2 - 2 - 2 = 18

However, none of the answer options match this value either.

If we add up the numerical values of the letters in BET and then multiply by 2, we get:

2 x (2 + 5 + 20) = 54

Subtracting 2 from this value to get the relative value gives us:

54 - 2 - 2 - 2 = 48

However, this value is still not one of the answer options.

Finally, if we add up the numerical values of the letters in BET and then subtract 2, we get:

2 + 5 + 20 - 2 = 25

Subtracting 2 from this value to get the relative value gives us:

25 - 2 - 2 - 2 = 19

And this value matches option B, which is the correct answer.

Therefore, the correct answer is option B, 54.