Consider the constant elasticity of substitution (CES) production function Y = [KW1W + (AL)(1}/0]w'+n where 0

Consider the constant elasticity of substitution (CES) production function a l)/ff] (CTI) where 0 < a < oc and # 1, (a is the elasticity of substitution between capital and effective labor. (a) Does this production function exhibits constant returns or increasing returns or decreasing returns to scale? Show complete work. (b) Compute per effective worker production function? Show all work?(5 points)