If you want to select 20 marbles out of a bag of 25 marbles, what are the total number of combinations that can be selected? (HINT: This uses the second rule of counting on pg. 7-8 of my handwritten class notes).

NOTE: If you have not "shown" how you obtained this answer in your file attachment (last question of the problem set), you will lose the points for "guessing" the answer here

Group of answer choices

A. 6435

B. 120

C. 53,130

D. 0.80