张阿姨经营着一个体育用品商店．一次，她购进了一批皮球，进价是每个6元，打算以每个8元的价格卖出．实际上她在原定卖价的基础上打九折卖出，当这批皮球全部卖出后，张阿姨共获利润216元．问：张阿姨买进的这批皮球一共有多少个？

After 10 years of hard work , the lady has turned into a movie star, _________ she dreamed of becoming in her childhood.

A．whose

B．what

C．that

D．which