a. Accounts receivable at the beginning of the year are $390. The company has a 45 -day collection period. Calculate cash collections in each of the four quarters by completing the following: Note: A negative answer should be indicated by a minus sign. Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16 . b. Recalculate the cash collections with a collection period of 60 days. Note: A negative answer should be indicated by a minus sign. Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16. c. Recalculate the cash collections with a collection period of 30 days. Note: A negative answer should be indicated by a minus sign. Do not round intermediate calculations and round answers to 2 decimal places, e.g., 32.16