During July, Alison's First Month of Trading, She Purchased 5,000

During July, Alison's first month of trading, she purchased 5,000 plates at £5 each and sold 4,000 plates at £7 each.
If half of Alison's sales were for cash and half were on one month's credit, Alison's Cash Budget for July would show the following:

A) Receipts from customers of £14,000.
B) Receipts from customers of £28,000.
C) Receipts from customers of £12,500.
D) Receipts from customers of £25,000.