Which of the following describes the given graph correctly?

Which of the following describes the given graph correctly?
A Endothermic reaction with energy A in absence of enzyme and B in presence of enzyme
B Exothermic reaction with energy A in absence of enzyme and B in presence of enzyme
C Endothermic reaction with energy A in presence of enzyme and B in absence of enzyme
D Exothermic reaction with energy A in presence of enzyme and B in absence of enzyme.

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Practise Biomolecules All 89 questions This chapter in 2016 Phase II