int numl, num2, num3; double length, width, height; double volume; numl = 6; num2 = 7; num3 = 4; %3D length = 6.2; width = 2.3; height = 3.4; double box (double, double, double); Which of the following statements are valid? If they are invalid, explain why. volume = box (length, width, height); b. volume = box (length, 3.8, height) ; а. %3D C. cout << box (num1, num3, num2) << endl; d. cout <« box (length, width, 7.0) << endl; volume = box (length, num1, height); е.

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