Consider four 5-bit registers A, B, C, and D using a bus structure capable of performing the following: C 8 FA C: DA+B C: CFA+C CB FA.C C:AB+D CD B C: BFC'+D CAF.D C through C, are control signals. Assume regular outputs for each register, how many OR gates are needed to implement the bus structure? OTwo 2 input OR gates One 2 input, One 3 input and one 4 input OR gates o One 2 input. One 3 input and Two 4 input OR gates O Five 8 input OR gates O One 3 input and one 4 input OR gates