3. (40 points) Design a complete system for controlling the vending of soda (including counting coins input to the machine) from a vending machine. Sodas are $50 cents Your machine accepts nickels, dimes and quarters. When the correct amount of money is entered, generate a signal that tells the machine to vend a soda. You need to design the finite state machine only for your vending machine (No need to implement it in Simulink). If the customer enters too much money, generate the signals to return the right change to the customer