Are resets typically synchronous or asynchronous?

Question $1$ options:

Asynchronous

Synchronous

Neither

Both

Design a $20$ cent vending machine controller by hand. $$Your controller will take in nickels and dimes and dispense a product anytime the customer has entered $20$ cents.$$ Your FSM has two inputs, Nin and Din.$$ Nin is asserted whenever the customer enters a nickel while Din is asserted anytime the customer enters a dime.$$ Your FSM has two outputs, Dispense and Change.$$ Dispense is asserted anytime the customer has entered at least $20$ cents and Change is asserted anytime the customer has entered more than $20$ cents and needs a nickel in change.