A directed graph depicting a Mealy finite state machine is shown. What conversion does the FSM perform?

a$)$ traces to get the sequence $0-1-0-1$

b$)$ traces to get the sequence $1-0-1-0$

c$)$ traces to get the sequence $0-1-1-0$

d$)$ traces to get the sequence $1-0-0-1$

e$)$ converts the incoming number to a $9\text{'}$s complement

f$)$ converts the incoming number to a $2^{\text{'}}\text{'}$s complement

g$)$ converts the incoming number to a ${10}^{\text{'}}$ s complement

h$)$ converts the incoming number to a $1^{\text{'}}\text{'}$s complement

i$)$ none of the above