in 1 The encapsulation concept means ed Select one: dout of O a. The class has private constructors and methods question O b. The data members are public access O c. you can't access the members of the class even from the class itself O d. The data members are private access an 15 class Afint x; A0(x-0;) };class B(A aa; ); in main we write B b1; the error because ed Select one: dout of O a. B has no default constructor question O b. B has no public methods and constructors O C. A has no public default constructor O d. A has no constructor with parameter