Look at the statement below.

If a number is a multiple of 4, it is divisible by 2.

Which of these is a logically equivalent statement?

If a number is divisible by 2, it is a multiple of 4.
If a number is not divisible by 2, it is a multiple of 4.
If a number is not a multiple of 4, it is not divisible by 2.
If a number is not divisible by 2, it is not a multiple of 4.