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The Student class contains an overloaded addition operator which allows a number of credits to be added to a Student's totalCredits. The function header is Student Student::operator+(int newCredits). The - operator has not been overloaded. Which of the following is correct in a program that initializes a Student object named aStudent? a. aStudent 3+ aStudent; b aStudent aStudent 3 C.both are correct d. none are correct If you have correctly overloaded the * operator to multiply two members of the Furniture class, and you have declared two Furniture objects, aDesk, and a aChair, then which of the following is a legal expression? o a aChair.operator (aDesk); b. aChair * aChair; . aChair * aDesk; d. all of the above Which of the following operators can be overloaded to be binary? a> o b. & C. o d To be able to add three or more objects in sequence, as in x + y + z, you must overload the +operator to accept multiple arguments accept no arguments . return an object of the same type as the arguments d. return a primitive type