On October 1, 20 times 3, PST Corporation purchased 80% of the outstanding voting shares of SDD Corporation for $800,000 cash. On this date, SDD reported the following: PPE had a remaining useful life of 10 years. The long-term debt matures in five years. It is now December 31, 20 times 5. On this date, PST reported $1, 450,000 of retained earnings, and SDD reported 3375,000. PST uses the cost method to record its investment in SDD. What is the consolidated retained earnings at December 31, 20 times 5? a) $1, 528, 400 b) $1, 530, 800 c) $1, 550,000 d) $1, 728, 400