读程序,判断下面哪一项是正确的( )。class TestA{ public $name; public function printInfo(){ echo "Welcome!
"; }}class TestB extends TestA{ public function printName(){ echo "name=".$this->name; }}
A.
类TestA继承了类TestB
B.
类TestA实例化后的对象可以访问printName()方法
C.
类TestB实例化后的对象可以访问$name成员
D.
类TestB实例化后的对象不能访问printInfo()方法
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