Consider the following question and decide which of the statements is sufficient to answer the question.
Question: 

Find the value of n, if
Statements:
1) $$AB = A$$
2)$$A = \begin{bmatrix}n & 9 \\2 & 1 \end{bmatrix},$$ $$B = \begin{bmatrix}1 & 0 \\0 & 1 \end{bmatrix}$$

A

Only 1 is sufficient

B

Only 2 is sufficient

C

Either 1 or 2 is sufficient

D

Both 1 and 2 are NOT sufficient