What Is Wrong with the Following Function Body

Multiple Choice

What is wrong with the following function body?
Void calculateint count, float price, float& cost)
{
If count < 0)
Cost=0.0;
Else
Cost=count*price;
Return;
}

A) void functions may not have a return statement.
B) void functions must return a value
C) nothing
D) can not mix reference and value parameters