(四) Colin: Where were you yesterday? I called you many times, but you didn’t answer the phone.Frank: Sorry. I joined 30 Famine with my cousin. When I left home yesterday morning, I forgot to bring my smartphone. Ijust got home ten minutes ago.  Colin: Do you mean you didn’t eat anything for 30 hours? Frank: Not really. I had water and milk in the past 30 hours. Now I’m very hungry.  Colin: Why did you only buy chicken soup? Frank: My father told me I could not have too much food if I kept being hungry for a long time.Colin: Why did you want to join such an activity? Frank: I wanted to experience hunger. Do you know the children in Africa are often hungry because they have no food to eat?  Colin: I’ve heard about that. Did you just sit there and wait for the last minute?  Frank: No. There were games during the 30 hours. Some famous singers sang on the stage and donated money to help theAfrican children. I think the activity is great. Next year you should go with me.Colin: Not me. I’m the person who can’t live without food. famine 飢餓 hunger 飢餓 African 非洲的
38. How many hours did Frank experience hunger?
(A) 20.
(B) 25.
(C) 30.
(D) 35.