Question 4 (1 point) Below we have a diagram of a 4-bit ripple carry adder АЗ Вз A2 B2 A1 B1 ве Cin Cin Full Full Cin Full Full Cin 0 Cout adder adder adder adder S3 S2 S1 What if we wanted to modify this to also handle subtraction? Instead of the initial carry in (c) value for the first bit adder being 0, we can imagine it being either a 1 or a 0. If c our adder will perform addition, but if c= 1, then our adder will perform subtraction. What is the appropriate gate that belongs in the “?” boxes below to achieve this functionality? 0, then ВЗ АЗ A2 B2 A1 B1 АВ ве ? ? Full Full Full Cin Full Cin Cin Cin-(e,1) Cout adder adder adder adder S3 S2 S1 S0 В. A. C. E. D. Answer 48 шi D D Show transcribed image text Question 4 (1 point) Below we have a diagram of a 4-bit ripple carry adder АЗ Вз A2 B2 A1 B1 ве Cin Cin Full Full Cin Full Full Cin 0 Cout adder adder adder adder S3 S2 S1 What if we wanted to modify this to also handle subtraction? Instead of the initial carry in (c) value for the first bit adder being 0, we can imagine it being either a 1 or a 0. If c our adder will perform addition, but if c= 1, then our adder will perform subtraction. What is the appropriate gate that belongs in the “?” boxes below to achieve this functionality? 0, then ВЗ АЗ A2 B2 A1 B1 АВ ве ? ? Full Full Full Cin Full Cin Cin Cin-(e,1) Cout adder adder adder adder S3 S2 S1 S0 В. A. C. E. D. Answer 48 шi D D

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Answer to Question 4 (1 point) Below we have a diagram of a 4-bit ripple carry adder АЗ Вз A2 B2 A1 B1 ве Cin Cin Full Full …