Correct option is D
Formula Used:
LCM = The smallest number that is a multiple of all given numbers.
Solution:
Prime factorization of 42 = 2 × 3 × 7
Prime factorization of 36 =
Prime factorization of 312 = × 3 × 13
Prime factorization of 126 = 2 × × 7
LCM = × 7 × 13 = 8 × 9 × 7 × 13 = 6552