____________ is collected during engine startup time, when the catalytic converter is cold, and then later released back into the exhaust flow when the converter is hot.

____________ is collected during engine startup time, when the catalyt

1.	____________ is collected during engine startup time, when the catalytic converter is cold, and then later released back into the exhaust flow when the converter is hot.
A.	HC
B.	CO
C.	CO<sub>2</sub>
D.	H<sub>2</sub>O
Answer» B. CO