Calendar year Parent Co acquired all of the stock of Sub Co on January 1, 2013, for $1,000,000. The parties immediately elected to file consolidated income tax returns. Sub Co generated taxable income of $250,000 for 2013 and paid a dividend of $100,000 to Parent Co. In 2014, Sub Co generated an operating loss of $350,000, and in 2015 it produced taxable income of $750,000. As of the last day of 2015, what was Parent Cos basis in the stock of Sub Co? Please show your calculations.

a.	$1,650,000.
b.	$1,550,000.
c.	$1,000,000.
d.	$0.