Translate the following sentence into English.
“一定时期内的收入总额就等于该期间由于销售业务而产生的现金收入和应收账款的总和。” A.
The revenue for any given period is equal to the inflow of cash and receivables from sales made in that period.   B.
The expenses for any given period is equal to the inflow of cash and receivables from sales made in that period.   C.
The revenue for any given period is not equal to the inflow of cash and receivables from sales made in that period.   D.
None of the above.