$(5$ pts each$)$ Using the labels provided on Figure B$\mathrm{.}5\mathrm{.}11,$ specify the values at the given points on the adder for the following two operations. $($Answers should be $0$ or $1.)$

a$)$ Addition: $7+5$

label A: Carryln to bit $0$

label B: Binvert signal

label C: CarryOut from ALU $1$ to ALU $2$

label D: Result for bit I $q,$

b$)$ Suburaction: $7-5$

label A: Carry In to bit $0$

label B: Binvert signal

label C: CarryOut from ALU $1$ to ALU $2$

label E: Result for bit $2q,$