Given a text T, and several options, according to the question posed in the text T to choose the most appropriate option from the options as the answer, please directly output the most appropriate option, do not need to output the explanation.

The dominant capital allocation line is the combination of the risk-free asset and the:
Option A:optimal risky portfolio.
Option B:levered portfolio of risky assets.
Option C:global minimum-variance portfolio.

Answer: A