Before play-offs, a certain team had won 8
题型：单项选择题
问题：
Before play-offs, a certain team had won 80 percent of its games. After play-offs, what percent of all its games had the team won ？（）
(1)The team competed in 4 play-off games.
(2)The team won all of its play-off games.
A.条件（1）充分，但条件（2）不充分.
B.条件（2）充分，但条件（1）不充分.
C.条件（1）和（2）单独都不充分，但条件（1）和条件（2）联合起来充分.
D.条件（1）充分，条件（2）也充分.
E.条件（1）和条件（2）单独都不充分，条件（1）和条件（2）联合起来也不充分.