Final answer:
The maximum increase in the money supply with a new $10,000 deposit and the reserve ratio increased from 10% to 12% would be less than $100,000, since the money multiplier effect would be reduced. The correct answer is option d. > $100,000.
Step-by-step explanation:
When the required reserve ratio is increased from 10% to 12% and there is a $10,000 new deposit, the maximum increase in the money supply can be calculated using the money multiplier formula.
The money multiplier is the reciprocal of the reserve ratio (1/reserve ratio). So, when the required reserve ratio is 10%, the money multiplier is 1/0.1 = 10. When the required reserve ratio is increased to 12%, the new money multiplier is 1/0.12 = 8.33.
To calculate the maximum increase in the money supply, multiply the new deposit amount by the money multiplier. In this case, the maximum increase in the money supply will be
$10,000 * 8.33 = $83,300.
Therefore, the correct answer is d. > $100,000.