单项选择题
自定义一个Person类,下面哪个选项是规范的便利构造器声明方式()
A.-(id)personWithName:(NSString*)theName;
B.-(id)personwithName:(NSString*)theName;
C.+(id)personwithName:(NSString*)theName;
D.+(id)personWithName:(NSString*)theName;
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