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Through the point `P(alpha,beta)` , where `alphabeta>0,` the straight line `x/a+y/b=1` is drawn so as to form a triangle of area `S` with the axes. If `a b >0,` then the least value of `S` is `alphabeta` (b) `2alphabeta` (c) `3alphabeta` (d) none

A

`alphabeta`

B

`2alphabeta`

C

`4alphabeta`

D

None of these

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