Answer:
The correct answer to the following question is option B) the amount of reserves would decline.
Step-by-step explanation:
If a person like in this case Steffi , withdraws $400 in cash from her checking account , then there would be an obvious decline in the bank reserves by $400 but here the monetary base would remain unchanged as by taking out the money in cash , the amount money supply among the people in the economy would increase . So therefore the correct option is B .