Technician A says that the engine block is the solid frame from which all automotive and truck engines are constructed and is made out of cast iron or aluminum. Technician B says that the cylinders ar

Technician A says that the engine block is the solid frame from which all automotive and truck engines are constructed and is made out of cast iron or aluminum. Technician B says that the cylinders are deep, can-shaped holes that are drilled into the engine block, and that the up-and-down movement of the pistons inside the cylinders produces the power needed to operate the vehicle. Who is right?