Solve this following

Question:

Let $A$ be a $2 \times 2$ matrix

Statement-1 : adj $(\operatorname{adj} A)=A$

Statement-2 : $|\operatorname{adj} \mathrm{A}|=|\mathrm{A}|$

  1. Statement $-1$ is true, Statement $-2$ is false.

  2. Statement-1 is false, Statement-2 is true.

  3. Statement-1 is true, Statement $-2$ is true;Statement $-2$ is a correct explanation for Statement-1.

  4. Statement-1 is true, Statement-2 is true; Statement-2 is not a correct explanation for statement-1.

Correct Option: , 4

Solution:

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