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If x1 , x2 , x3 , x4 , x5 are numbers fr...

If `x_1 , x_2 , x_3 , x_4 , x_5` are numbers from 1 to 18 such that `x_1 lt x_2 lt x_3 lt x_4 lt x_5` Then the probability that `x_2=7 and x_4=11` is

A

`1/136`

B

`1/72`

C

`1/68`

D

`1/34`

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