Please show work

You are designing a 2-bit adder from two full adders. The adder has input and output registers and must complete the addition in one clock oycle. The d design for the adder is shown below CLK CLK Ao- B out A in Each full adder has the following propagation delays: . C in to C out: 20 ps . C in to S (sum): 20 ps - A, B to C out: 25 ps . A, B to S (sum): 30 ps Each full adder has the following contamination delays: . C in to elther output: 15 ps - A, B or either output: 22 ps Each flip-flop has the following characteristics