Which statement is wrong for Krebs' cycle?

• A
  There is one point in the cycle where $FAD^+$ is reduced to $FADH_2$.
• B
  During conversion of succinyl $CoA$ to succinic acid,a molecule of $GTP$ is synthesised.
• C
  The cycle starts with condensation of acetyl group (acetyl $CoA$) with pyruvic acid to yield citric acid.
• D
  There are three points in the cycle where $NAD^+$ is reduced to $NADH + H^+$.