The cross section of V belt consist of rubber backing to help engagement of teeth with sprocket.
(a) Yes
(b) No, it is used for protection
(c) There is no rubber packing
(d) None of the listed
This question challenged me by my school teacher while I was bunking the class.
This challenging question is from the Belt Tensioning Methods in chapter Friction Clutches, Brakes, Belt Drives and Chain Drives of Machine Design