Based on the corporate valuation model, Wang Inc.s total corporate value is $550 million. Its balance sheet shows $100 million notes payable, $200 million of long-term debt, $40 million of common stock (par plus paid-in-capital), and $160 million of retained earnings. What is the best estimate for the firms value of equity, in millions?

A) $228
B) $250
C) $188
D) $213
E) $235