The farmer can continue to support himself and his family only if he produces a surplus.

The farmer can continue to support himself and his family only if he produces a surplus.

A、只要农民生产有剩余，就能养活自己和家人。

B、只有生产更多的农作物，农民才能养活自己和家人。

C、只有当拥有盈余时，农民才能持续地供养自己和家人。

D、农民生产有剩余，只有这样，他才能养活自己和家人。