The Citric acid cycle was elucidated by......

Where does the $TCA$ cycle take place?

Which one of the following reactions is an example of oxidative decarboxylation?

Select the correct statement with respect to the Krebs cycle.

The reactions of the $Krebs$ cycle take place in:

$A$: Succinyl $CoA$ is the precursor of pyrrole group-containing compounds.
$R$: Succinyl $CoA$ is an intermediate of the $TCA$ cycle.