The drive shaft connects the transmission output shaft to the differential pinion shaft.Since all roads are not perfectly smooth, and the transmission is fixed,the drive shaft has to be flexible to absorb the shocks of bumps in the road.Universal,or "U-joints" allow the drive shaft to flex when the drive angel changes. According to this paragraph, which statement is true? A. U-joints allow the drive shaft to flex when the drive angel changes B. The engine allows the drive shaft to flex when the drive angel changes C. The piston allows the drive shaft to flex when the drive angel changes D. The oil pump allow the drive shaft to flex when the drive angel changes