$\begin{array}{1 1}(A)\;\large\frac{3}{143}\\(B)\;\large\frac{2}{143}\\(C)\;\large\frac{4}{143}\\(D)\;\large\frac{9}{143}\end{array} $

Step 1:

Given the word ASSASSINATION

Two I's and two N's come together

Considering two I's and two N's as one letter

$\therefore$ Total number of letters =10 and they can be arranged in 4! ways.

Step 2:

$\therefore P=\large\frac{10!}{13!}$$\times 4!$

$\Rightarrow \large\frac{2}{143}$

Hence (B) is the correct answer.

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