ABC corporation has 100 types of customers from Type 1 to Type 100. For any customer Type N (where N varies from 1 to 100), the customer default rate is % and the account receivable period is N months. If the gross profit margin of the business is 45%, and the cost of capital is 20% per annum. Out of the 100 types of customers, which are the types of customers with which ABC corporation would not like to do any business. Assume all cashflows due to profits from sales, and losses due to customer defaults occur at the end of the year 1.