Consider the Following Class Definitions: Which of the Following DClass

Multiple Choice

Consider the following class definitions: Which of the following dClass constructor definitions is valid in C++?

A) dClass::dClass(double a, double b, double c)
: bClass()
{
x= a;
y = b;
z = c;
}
B) dClass::dClass(double a, double c)
{
x = a;
z = c;
}
C) dClass::dClass(double a, double b)
: bClass()
{
x = a;
y = b;
}
D) dClass::dClass(double a, double b, double c)
: bClass(a, b)
{
z = c;
}