Study the cyclic pathway given below.

Select the incorrect statement with respect to the above pathway.

• A

  The first step is the most crucial step.

• B

  Carboxylation is catalysed  by the RuBisCo enzyme, which results in the formation of the first stable product.

• C

  The second step involves utilisation of ATP and NADPH.

• D

  Both ATP and ribulose 1,5  bisphosphate regenerate during step 3.