单项选择题

style="padding-left:0px;">class Person:
def __init__(self,n="xxx"):
self.name=n
class Student(Person):
def __init__(self,s="male"):
self.sex=s
def show(self):
print(self.name,self.sex)
s=Student("female")
s.show()
结果:

A.xxx female
B.xxx male
C.结果错误
D.xxx
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