While Discussing Manifolds, Technician a Says That Exhaust Manifolds Must

Multiple Choice

While discussing manifolds, Technician A says that exhaust manifolds must carry very hot exhaust gases so they are usually made of cast iron. Technician B says that some manifolds are constructed of steel tubing. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B