The correct options are
C 3426
D 3521
A number is said to be divisible by 4 if the number formed by the last two digits of the number are divisible by 4.
Here,
3948 is divisible by 4 because 48 is divisible by 4.
3116 is divisible by 4 because 16 is divisible by 4.
3426 is not divisible by 4 because 26 is not divisible by 4.
3521 is not divisible by 4 as 21 is not divisible by 4.