What's the sum of the interior angles of the polygon shown?Question options:A) 1,620°B) 1,980°C) 1,440°D) 1,260°

Using the formula ( n − 2 ) × 180 and n=number of sides (in this case 9), we have:
( 9 - 2 ) x 180 (Replacing the values)
7 x 180 (Subtracting)
1260 (Multiplying)
The answer is the option D.