A survey conducted by students from the Faculty of Statistics shows, in hours per day, how young people between 12 and 18 years old spend their time, both during the week (Monday to Friday) and on weekends (Saturday and Sunday). The following table illustrates the results of the survey.
| Youth Routine | During the week | On weekends |
| Watching television | 3 | 3 |
| Household activities | 1 | 1 |
| School activities | 5 | 1 |
| Leisure activities | 2 | 4 |
| Rest, hygiene and eating | 10 | 12 |
| Other activities | 3 | 3 |
According to this survey, how many hours of their time does a young person between 12 and 18 years old spend in the entire week (Monday to Sunday) on school activities?
(A) 20
(B) 21
(C) 24
(D) 25
(E) 27