What Level of Tach Reference Information Is Required for the PCM

What level of tach reference information is required for the PCM to properly control a COP ignition system?

A) Level one information indicating that "a pair of cylinders`pistons is approaching TDC"
B) Level two information indicating "which pair of cylinders`pistons is 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 for the PCM to control a COP ignition system

Correct Answer:

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