What level of tach reference information is required in order for the PCM to properly control a distributor ignition system?
A. Level one information indicating that "a pair" of cylinders' pistons are approaching TDC
B. Level two information indicating "which pair" of cylinders' pistons are approaching TDC
C. Level three information indicating which cylinder of the piston pair approaching TDC is on the compression stroke
D. None of this information is required in order for the PCM to control a distributor ignition system
Answer: A
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