Answer:
d. $900,000 billion.
Explanation:
The computation of total money supply is shown below:
But before that first we have to find out the required reserves, excess reserve and the multiplier which are given below:
Required reserve is
= $300,000 × 10%
= $30,000
Now the excess reserve is
= $120,000 - $30,000
= $90,000
And, the multiplier is
= 1 ÷ 10%
= 10
So, total money supply is
= $90,000 × 10
= $900,000 billions