But for water, people ______ not live on the earth.

A．the author did not understand the importance of giving until he was in late thirties
B．the author was like most people who were mostly receivers rather than givers
C．the author received the same education as most people during his child- hood
D．the author liked most people as they looked upon life as a process of get- ting

A．a count
B．an account
C．an accident
D．an incident