Shirley has made the following predictions for her business for the first six months of trading to 30 June: Sales in Jan, Feb and March =30,000 per month. Sales in Apr, May and June =45,000 per month. Sales will be on one month's credit. The trade receivables figure as of 30 June will be: a. 30,000. b. 45,000. c. 90,000. d. ENIL