Imagine a gas station that offers a rewards card program. When a customer buys gas, he or she is rewarded with used to purchase other goods. Write a function gas. reward) that takes the following arguments, in this order 1. currentpoints: the current rewards points (an integer) on the customer's gas rewards card 2. gas. type: the type of gasoline purchased (a string), which is one of the following Regular: $2.65/ gallon Plus':$2.90/ gallon . 'Premium $3.10/ gallon 3. money_spent: the amount of dollars spent on gas for a particular transaction. This number is needed to As previously mentioned, after each gas refill, the customer gets a certain amount of rewards points. The function 1. Normally, 5 points are rewarded for everyfull dollar spent. For example, $6.83 spent will result in 5x6=30 compute how many gallons of gas were purchased. calculates and returns the updated, new total rewards points of the customer. The rewards rules are as follows: new reward points. Hint: given a floating-point variable x, the code int (x) will truncate x, thereby giving only the integer part of x: integer part- int (x) 2 If at least 10 gallons of gas were purchased, the customer will be rewarded 200 reward points 3. If at least 15 gallons of gas were purchased, the customer will be rewarded 400 reward points 4. If at least 20 gallons of gas were purchased, the customer will be rewarded 550 reward points Note: Only one of the above rules can be applied per transaction. For example, if a customer bought 16 gallons of gas, he/she will get 400 and only 400 reward points. Rule is applied for purchases of less than 10 gallons Special Cases: Below are some special cases that the function must handle. Your code should check for these special cases in this order