In the highly simplified diagram below, the energy landscape of secretory vesicle fusion to the plasma membrane is shown in the presence or absence of appropriate SNARE complexes. Which curve (A or B) do you think corresponds to the presence of SNARE complexes? Write down A or B as your answer. 
Definitions:
Beta
A standard for evaluating the unpredictability, or fundamental risk, of a security or diversified portfolio in contrast with the entire market.
Non-diversifiable Risk
The portion of risk that can't be eliminated through diversification, often related to systemic factors affecting all investments.
Standard Deviation
A statistical measure that quantifies the amount of variation or dispersion of a set of data values.
Systematic Risk
Systematic risk refers to the overall market risk that cannot be eliminated through diversification, affecting all investments to some extent.
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