The firm uses the following function to calculate the production output `(P O): P O=5. 3\ C^2L^(15),` where `C=` capital invested and L=labour employed. If the capital invested C increases by 20 percent, the change in PO will be `20%\ d e c r e a s e` b. `32 %\ i nc r e a s e` c. `44 %\ i n c r e a s e` d. `56%\ i n c r e a s e`