Four-Year-Old Becky Has Just Hit Her Sister Again

Four-year-old Becky has just hit her sister again.What should Becky's mom do? Most developmental psychologists would suggest:

A) giving Becky a spanking; she is too young to understand reasoning.
B) explaining to Becky that "hitting hurts"; she is old enough to understand the consequences of her behavior for others.
C) sending Becky to bed without dinner; she is too young to understand reasoning.
D) giving Becky a spanking; she is old enough to understand the consequences of her behavior,and would expect to be punished accordingly.