If x and y are co-primes, then their LCM is:

Correct option is D

Solution:

When two numbers are co-primes, their greatest common divisor (GCD) = 1.

We know the relation:
LCM × GCD = Product of numbers

Since GCD(x, y) = 1,
=> LCM(x, y) = (x × y) / 1 = xy

Final Answer: (D) xy