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Let T, be the r^(th) term of an A.P. who...

Let `T`, be the `r^(th)` term of an A.P. whose first term is `a` and common difference is `d` If for some positive integers `m, n, m != n`, `T_(m) = 1/n` and `T_(n) = 1/m`, then `a - d` equals

A

`1/m`

B

1

C

0

D

`1/m + 1/n`

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The correct Answer is:
C
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