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.

Which of the following statements describes an aspect of margin accounts for futures?
Option A:The maintenance margin is always less than the initial margin.
Option B:The initial margin required is typically at least 10% of the futures price.
Option C:A margin call requires a deposit sufficient to raise the account balance to the maintenance margin.

Answer: A