Pine Company Purchased a 60% Interest in the Scent Company

Pine Company purchased a 60% interest in the Scent Company on January 1, 20X1 for $360,000. On that date, the stockholders' equity of Scent Company was $450,000. Any excess cost on 1/1/X1 was attributable to goodwill. Pine purchased another 20% interest on January 1, 20X4 for $200,000. On January 1, 20X4, Scent Company's stockholders' equity was $700,000, the entire increase due to retained earnings. The excess of cost over book on the new block of stock is ____.

A) $60,000
B) $50,000
C) $48,000
D) $20,000