A Rectangle Has Its Base on the X-Axis and Its $y = 12 - x ^ { 2 }$

Multiple Choice

A rectangle has its base on the x-axis and its upper two vertices on the parabola $y = 12 - x ^ { 2 }$ The largest area of the rectangle is

A) 42
B) 36
C) 32
D) 16
E) 12