G. No answer above is correct

Four students, Amy, Ben, Collin, and Debbie, are in my office. They have several questions, and need to attend classes soon. Each question takes exactly 10 minutes to answer. Suppose that we set the order of students to minimize the total time of the delay for their classes. How many minutes will the LAST student be late for her/his class? Student A Student B Time to answer questions Class starting time 1 question (=10 min) 20 min later 3 questions (=30 min) 120 min later 4 questions (=40 min) 60 min later 4 questions (=40 min) 30 min later Student C Student D Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a 0 min b 20 min C 30 min d 40 min e 50 min f 70 min