Which of the following describes the graph correctly?

1. Endothermic reaction with energy A in the presence of enzyme and B in the absence of enzyme

2. Exothermic reaction with energy A in the presence of enzyme and B in the absence of enzyme

3. Endothermic reaction with energy A in the absence of enzyme and B in the presence of enzyme

4. Exothermic reaction with energy A in the absence of enzyme and B in the presence of enzyme