The number of odd proper divisors of 3^(...

The number of odd proper divisors of `3^(p)6^(q)15^(r),AA p,q,r, in N`, is

A

`(p+1)(q+1)(r+1)-2`

B

`(p+1)(q+1)(r+1)-1`

C

`(p+q+r+1)(r+1)-2`

D

`(p+q+r+1)(r+1)-1`

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The correct Answer is:

D

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