Question: If the member variables in a base class are private, then a . they can be directly accessed or changed in the derived class b

If the member variables in a base class are private, then
a.
they can be directly accessed or changed in the derived class
b.
the derived class must use accesssor or mutator functions from the base class
c.
making them private causes a syntax error
d.
you must declare them in the derived class also

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