What Would Happen If a Drug Directly Interfered with the Functioning

Multiple Choice

What would happen if a drug directly interfered with the functioning of RuBP carboxylase?

A) Water would not be split at the start of photosystem II,halting the light reactions.
B) Chemiosmosis and ATP production would cease,halting the Calvin cycle.
C) Carbon dioxide would not be fixed to RuBP,stalling the Calvin cycle.
D) RuBP would not be regenerated from G3P,halting the Calvin cycle.