Answer:
The answer to the given question is option "b".
Explanation:
In this question, we use option b because this option will provide a list of the number of customers in 12 each region owing more than $1,000. and other option is not correct that will be described as:
- In the option a, It will provide the balance of the customer.
- In the option c, It will decrease the list of region number.
- In the option d, It will provide the total balance of the regions.
That's why the answer to this question is option b which is "customerCount[regionNum] = customerCount[regionNum] +1".