Find [A] t'tx), {B} the partition numbers for f', and [C] the critical numbers of f. x} 2 x3 48x + e {A} f'tx] : 3x2 43 [E] Find the partition numbers for f'. Select the correct choice below and. if necessary, fill in the answer box to complete your choice. '53) A- The partition numberts) isiare X 2 {Use a comma to separate answers as needed.) -.j::- B. There are no partition numbers. [C] Find the critical numbers for f. Select the correct choice below and, if necessary. ll in the answer box to complete your choice. '39-} A- The critical numberts) istare x: -. {Use a comma to separate answers as needed.) -.j::- B. There are no critical numbers