Solve I$\mathrm{.}2$

Describe the effect that a single stuck at $1$ fault $($i$.$e$.$ regardless of what it should be$,$the signal is always $1)$ would have on the multiplexors in the single cycle datapath shown in the figure below. Which instructions, if any, would still work? Consider each

of the following faults separately: RegDst $=0,$ALUSrc$=0,$ MemtoReg$=0,$ Zero $=0.$