If p >1 and q >1 are such that log(p+q)=...

If `p >1` and `q >1` are such that `log(p+q)=logp+logq ,`then the value of `log(p-1)+log(q-1)` is equal to (a) 0 (b) 1 (c) 2 (d) none of these

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