Classify the following production functions as CRS, DRS, or IRS (Note: x^2 means x-squared). You don't have to give an explanation. Just write the production function in the answer box below, and next to it, write IRS, CRS, or DRS.

(1) Y = A(K^2)(L^2)

(2) Y = KL

(3) Y = A(K)(L^2)

(4) Y = A(K^(1/2))(L^(1/2))

(5) Y = AK/L