Your program should contain the following variables:

state $-$ this will store the current state of the machine. Initial value: $"$A$"$

cost $-$ this is the cost of each item in the machine. Initial value: $7$

money $-$ the total amount of money currently inserted into the machine. Initial value: $0$

item $-$ the item selected by the user in state C and dispensed in state D$.1$ is soda, $2$ is snack, $3$ is candy. Initial value: $0$

inv$\_$soda $-$ this the number of sodas in the machine. Initial value: $4$

inv$\_$snack $-$ this the number of snacks in the machine. Initial value: $2$

inv$\_$candy $-$ this the number of candy bars in the machine. Initial value: $3$