Write an interactive C program using if - else statement, to input water unit charge and calculate the total water bill according to the given condition: For the first 50 units RM 0.40/unit For the next 100 units RM 0.80/unit For the next 100 units RM 1.20/unit For above 250 units RM 1.55/unit An additional surcharge of 15% is added to the bill.