For a list of integers named nums,

a. Give a while loop that adds up all the values in nums. (2 pts.)

b. Write a for loop that adds up all the values in nums in which the loop variable is assigned each value in the list. (2 pts.)

c. Write a for loop that adds up all the elements in nums in which the loop variable is assigned to the index value of each element in the list. (2 pts.)

d. Write a for loop that displays the elements in nums backwards. (2 pts.)