A. 8 to 9 ounce
B. 9 to 10 ounce
C. 10 to 11 ounce
D. 11 to 12 ounce
Explanation:
A regulation volleyball should be 65-67 centimeters in circumference and weigh 260-280 grams (9-10 oz). The ball’s inside pressure should be 0.30-0.325 kg/cm2 (4.26-4.61 psi).