Problem 4 Suppose that we want to perform the combined multiply and add operations with a stream of numbers: Ai + Bi * (Ci * Di) for i=1,2,...,4. Each suboperation is to be implemented in a segment within a pipeline. Each segment has one combinational circuit with two inputs (no two combinational circuits are allowed at the same segment). Specify a pipeline configuration to carry out this task. List the contents of all registers in the pipeline for the first 4 clock cycles