Imagine you are cooking dinner for 3 friends the item your cooking is steak, 1 for each friend. you want to prepare the meat as quickly as possible, considering that the side dishes are already prepared and ready to go. each steak requires 10 minutes for it to be cooked the way your friends want it. with 5 minutes being for each side. your big skillet is already in use, and all you have available is a small pan. that can only fit 2 steaks at a time. with some logic you find the fastest way to cook the steaks in you pan in the smallest time possible. how long then, do your friends have to wait until all the steaks are ready?

a: 15 minutes. b: 10 minutes. c: 20 minutes. d: 25 minutes.