The $TCA$ cycle starts with the condensation of an acetyl group with:

Pyruvate is converted to Acetyl CoA by the process of . . . . . . .

The Krebs cycle occurs in the ....

Kreb's cycle is also called

Succinic dehydrogenase is associated with which process of the Krebs cycle?

$(i)$ Label $A, B, C$ and $D$.
$(ii)$ How many $CO_2$ molecules are evolved between $A$ and Malic acid?
Choose the correct option from the following regarding the answers to the above questions $:-$