1. a. Sketch the blocks for an app that, on a button (called avgButton) click, adds up a list of numbers. The app should use a foreach loop and display the average in a label called avgLabel. Here are some of the necessary blocks: initialize global numbers to make a list 3 for each item in list 1 do 5 length of list list 10 select list item list index C8 so For each item in list b. Repeat Question 1.a using while loop instead of foreach loop: while test do c. When using a foreach, you typically don't need an index variable or a select list item block. Explain. 1. a. Sketch the blocks for an app that, on a button (called avgButton) click, adds up a list of numbers. The app should use a foreach loop and display the average in a label called avgLabel. Here are some of the necessary blocks: initialize global numbers to make a list 3 for each item in list 1 do 5 length of list list 10 select list item list index C8 so For each item in list b. Repeat Question 1.a using while loop instead of foreach loop: while test do c. When using a foreach, you typically don't need an index variable or a select list item block. Explain