关于人的性格说法，下列哪种说法错误？ Which of the following is ERROR about human character?
A.人的性格是一成不变的 Person's temperament or personality is immutable and frozen
B.随着年龄增长人逐渐向多方位发展 People gradually develop toward the comprehensive direction
C.每个人的性格都有所不同 Everyone has different character
正确答案是A