Tian Company has provided the following information:

Cash sales, $450,000
Credit sales, $1,350,000
Selling and administrative expenses, $330,000
Sales returns and allowances, $90,000
Gross profit, $1,360,000
Increase in accounts receivable, $55,000
Bad debt expense, $33,000
Sales discounts, $43,000
Net income, $1,030,000

How much are Tian's net sales?

A. $307,000.
B. $252,000.
C. $440,000.
D. $340,000.