A certain project consists of five parallel tasks A, B, C, D, and E. Task A requires 2 workers and lasts 5 days; B requires 2 workers and lasts 3 days; C requires I worker and lasts 2 days; D requires 1 worker and lasts 4 days; and E requires I worker and lasts 2 days. If the number of workers on a task cannot be changed, what is the least number of workers that can be assigned to the project? 24 workers 7 workers 1.5 workers per day 2 workers