Which of the Following Specifications Could NOT Be Employed for Estimating

Multiple Choice

Which of the following specifications could NOT be employed for estimating a short run production function?

A) Q = aK + bL
B) $Q = a K ^ { 3 } L ^ { 3 } + b K ^ {2 } L ^ { 2 }$
C) Q = AL³ + BL²
D) both a and b
E) all of the above