An Internet Service Provider$($ISP$)$ has three different subscription packages for its customers:

Package A: For $$15$ per month with $50$ hours of access provided.

Additional hours are $$2\mathrm{.}00$ per hour over $50$ hours.

Package B: For $$20$ per month with $100$ hours of access provided.

Additional hours are $$1\mathrm{.}50$ per hour over $100$ hours.

Package C: For $$25$ per month with $150$ hours access is provided.

Additional hours are $$1\mathrm{.}00$ per hour over $150$ hours

The ISP has contracted us to write the application software for their new Billing System.

Assume the Billing Cycle is $30$ days.

Assume usage is recorded in one$-$hour increments,

Write a program that uses the following functions to obtain the number of hours consumed, and calculates the different amounts owed based on the plan type:

unsigned short getHours$()$;

float calculatePkgA$($unsigned short hours$)$;

float calculatePkgB$($unsigned short hours$)$;

float calculatePkgC$($unsigned short hours$)$;

Sample output:

Enter the # of hours of access used:$135$

Under plan A your cost is: $$185\mathrm{.}00$

Under plan B your cost is: $$72\mathrm{.}50$

Under plan C your cost is: $$25\mathrm{.}00$

Bonus:

write a function with this signature:

float calculatePacakge$($

float baseRate,

unsigned short coveredHours,

float overageRate,

unsigned short hoursConsumed$)$;

Refactor your code so that the functions for packages A$,$ B$,$ and C make a single call to the general$-$purpose calculatePackages function and return the same results.