In how many days can 10 women finish a work? I. 10 men can complete the work in 6 days. II. 10 men and 10 women together can complete the work in 3 3 days 7 III. If 10 men work for 3 days and thereafter 10 women replace them, the remaining work is completed in 4 days.

• Only I and II
• Any two of the three
• Only I and III
• Only II and III