For the current taxable year, RST Inc.'s gross income from operations was $1,000,000 and its expenses from operations were $1,500,000. RST Inc. also received a $600,000 dividend from a 10 percent-owned corporation. How much is RST Inc.'s dividends-received deduction?
A. 0.
B. $70,000.
C. $320,000.
D. $420,000.