1) Write the described loops. Don't forget to do any required initializations. a) Write a for loop that calculated and prints all of the odd numbers from -20 to 20, one per iteration. b) Write a while loop that calculated and prints all of the odd numbers from -20 to 20, one per iteration. c) Write a nested loop that produces the following output: 2 3 4 5 6 7 8 9 10 11 12 13 14 15