The Mat Around the Picture Shown Measures X Inches Across $( 43 ) ( 34 ) - x ^ { 2 } = 900$

Multiple Choice

The mat around the picture shown measures x inches across. Which one of the following equations says that the area of the picture itself is 900 square inches?

A) $( 43 ) ( 34 ) - x ^ { 2 } = 900$
B) $2 ( 43 - 2 x ) + 2 ( 34 - 2 x ) = 900$
C) $( 43 - 2 x ) ( 34 - 2 x ) = 900$
D) $( 43 - x ) ( 34 - x ) = 900$