The HCF of two expressions p and q is 1. What is the reciprocal of their LCM?

- p + q
- p - q
- pq
- (pq)
^{-1}

The product of two polynomials is equal to the product of their HCF and LCM.

HCF × LCM = pq

Given, HCF = 1

So, LCM = pq

1/LCM = (pq)^{-1}

**The correct option is D.**

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