The matrix `[{:(1,0,0),(0,2,0),(0,0,4):}]` is a

Options

A. identify
B. symmetric matrix
C. skew-symmetric matrix
D. none of these

Explanation

To determine the nature of the given matrix \( A = \begin{pmatrix} 1 & 0 & 0 \\ 0 & 2 & 0 \\ 0 & 0 & 4 \end{pmatrix} \), we will analyze it step by step.

### Step 1: Identify the type of matrix
The matrix \( A \) is a diagonal matrix because all the non-diagonal elements are zero.

**Hint:** A diagonal matrix has non-zero elements only on its main diagonal.

### Step 2: Check if it is an Identity Matrix
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