Eskom in South Africa wants to keep track of its customers' electricity usage. Each customer has a unique ID$,$ name, and address. The provider charges its customers based on the following tariff structure:

If the consumer uses $200$ kWh or less, the tariff is R$1\mathrm{.}50$ per kWh$.$

units $*1\mathrm{.}5$

If the consumer uses more than $200$ kWh but less than $500$ kWh $(201$ kWh to $500$ kWh$),$ the tariff is R$2\mathrm{.}00$ per kWh for every kWh over $200.$

$(200*1\mathrm{.}5)+(($units$-200)*2)$

For consumption exceeding $500$ kWh$,$ the tariff is R$2\mathrm{.}50$ per kWh for every kWh over $500.$

$(200*1\mathrm{.}5)+(300*2)+(($units$-500)*2\mathrm{.}5)$

Write a C# program that allows the user to:

Add a new customer.

Input electricity consumption for a customer.

Calculate the bill for a customer.

Exit the program.

Sample output:

Electricity Billing System

$1.$ Add a new customer

$2.$ Input electricity consumption for a customer

$3.$ Calculate the bill for a customer

$4.$ Exit

Enter your choice: $1$

Enter customer ID: $101$

Enter customer name: Eva

Enter customer address: $123$ Berg St

Customer added successfully.

Electricity Billing System

$1.$ Add a new customer

$2.$ Input electricity consumption for a customer

$3.$ Calculate the bill for a customer

$4.$ Exit

Enter your choice: $2$

Enter customer ID: $101$

Enter electricity consumption for Eva $($in kWh$)$: $300$

Electricity consumption recorded successfully.

Electricity Billing System

$1.$ Add a new customer

$2.$ Input electricity consumption for a customer

$3.$ Calculate the bill for a customer

$4.$ Exit

Enter your choice: $3$

Enter customer ID: $101$

Total Bill Amount for Eva: R$550\mathrm{.}00$

Electricity Billing System

$1.$ Add a new customer

$2.$ Input electricity consumption for a customer

$3.$ Calculate the bill for a customer

$4.$ Exit

Enter your choice: $4$

Exiting program