Tibbles Limited Receives Cash from a Credit Customer of £30,000

Tibbles Limited receives cash from a credit customer of £30,000. Which one of the following is the correct double entry to record this cash receipt in Tibbles Limited's books of account?

A) Debit trade receivables £30,000, Credit sales £30,000
B) Debit cash £30,000, Credit trade payables £30,000
C) Debit cash £30,000, Credit trade receivables £30,000
D) Debit cash £30,000, Credit sales £30,000