Answer:
B. The domain would only include positive integers.
C. The domain would only include positive numbers.
Explanation:
We are given a function that represents the amount of money in the checking account.
As, the function contains the amount of money in the account, the domain cannot have negative values.
So, the domain cannot include all real numbers and it cannot include only integers.
Therefore, the domain can include positive numbers and therefore, it can also include positive integers.
Hence, B and C are correct.