Correct option is C
Formula Used:
LCM = Lowest Common Multiple of all given numbers
Solution:
Prime factorization of 40 = 2³ × 5
Prime factorization of 20 = 2² × 5
Prime factorization of 195 = 3 × 5 × 13
Prime factorization of 160 = 2⁵ × 5
LCM = Highest power of all prime factors = 2⁵ × 3 × 5 × 13 = 32 × 3 × 5 × 13= 6240