The money supply in the economy decreases.
Answer: Option A
Step-by-step explanation:
The central bank of the country has certain measures which can control the supply of the money in the economy. One of those measures is to buy and sell bonds in the market.
If the central bank sells bonds to the other banks, it will result in the decrease in the supply of the money in the market because the reserves in the bank also reduces. The bank purchases the bonds from the central bank and thus the reserves decrease.