Technician a says that a cracked exhaust manifold can affect oxygen sensor operation. technician b says that a clogged air filter element won't affect emissions. who is correct?

a. both technicians a and b
b. technician b
c. neither technician a nor b
d. technician a

tech A only

Explanation:

Technician A is right because a cracked exhaust manifold allows more oxygen into the exhaust stream, which affects oxygen sensor voltage. Technician B is wrong because a clogged air filter raises Hydrocarbons (HC) and also affects O2 (Oxygen) and CO (Carbon Monoxide) levels.

you have to be a ambitious

answer; i believe its compare (b3: b4) ;