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.

Monetarists favor a limited role for the government because they argue:
Option A:government policy responses may lag.
Option B:firms take time to adjust to systemic shocks to the economy.
Option C:resource use is efficient with marginal revenue and cost equal.

Answer: A