Final answer:
When the Fed purchases $10,000 worth of securities with an 8% required reserve ratio, deposits will rise by $125,000. Therefore, the correct option is A.
Step-by-step explanation:
When the Fed purchases $10,000 worth of securities and the required reserve ratio is 8%, deposits will increase by a certain amount.
To calculate this, we can use the money multiplier formula, which is 1 divided by the reserve ratio.
Money multiplier = 1/Reserve ratio
= 1/0.08
= 12.5
So, if the Fed purchases $10,000 worth of securities, the change in deposits would be
$10,000 x Money multiplier
= $10,000 x 12.5
= $125,000.
Therefore, deposits will rise by $125,000 in this scenario.