Brussels Ltd uses accrual accounting. Each of the following events occurred during the month of February. Which one of them should be recorded as a revenue or expense for the month of February? Select one: O a. Collections of $10,000 were made from sales that occurred during January O b. Materials costing $18,000 were purchased and paid for. It is expected that they will be used during March C. A bill in the amount of $8,600 was received from a supplier for goods purchased during January. It was paid immediately. O d. Sales of $30,000 were made on credit. They are collected during March e. None of the above