Detailed Solution:
The correct answer is “(A) is true, but (R) is false”.
Both Akbar and Sher Shah Suri made significant efforts to regulate and standardize the currency in their respective times.
During Sher Shah Suri's rule, the principal currency was the Rupiya. The Rupiya became a significant silver coin, and he also introduced other coins such as the Dam (a copper coin) and the Mohur (a gold coin).
The dam was initially the most common coin in Akbar's time, before being replaced by the rupee as the most common coin in succeeding reigns.