esign a vending machine controller $($Moore$)$ for the following

specification: Show state diagram, state table and state transition table.

$$ Deliver bottled water when depositing $35$ cents or more.

$$ Change is not returned.

$$ Machine accepts only nickels, dimes, and quarters.

$$ Machine has single coin slot.

$$ Use D$-$Flip Flops.

Q$-10$: How many states will be there for Q$-9,$ if Machine accepts:

a$)$ Only nickels.

b$)$ Only dimes.

c$)$ Only quarters.

Q$-10$: How many states will be there for Q$-9,$ if Machine accepts:

a$)$ Only nickels.

b$)$ Only dimes.

c$)$ Only quarters.