please help me with this question

Which one of the followings best describes an expansionary open market operation carried out by the central bank? a Selling government bonds to the public leads to a reduction in the money supply with a decrease in the price of bonds and an increase in the interest rate b. Buying government bonds from the public leads to an increase in the money supply with a decrease in the price of bonds and an increase in the interest rate Selling government bonds to the public leads to a reduction in the money supply with an increase in the price of bonds and a decrease in the interest rate d, Buying government bonds from the public leads to an increase in the money supply with an increase in the price of bonds and a decrease in the interest rate Oe. All of the answers here are incorrect