Explanation
In PS I, the reaction center chlorophyll a has an absorption peak at 700 nm, hence is called P700, while in PS II it has absorption maxima at 680 nm and is called P700. C4 cycle or Hatch and Slack pathway operates in C4 plants only. The primary acceptor is Phosphoenol pyruvic acid. The first stable compound formed is Oxaloacetic acid which is 4-carbon compound.
So, the correct answer is option B.
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