Can you explain answers for those questions?

Ephraim Corporation acquired 80 percent of Lilac Corporation for $200,000 cash. Lilac reported net income of $25,000 each year and dividends of $5,000 each year for 20X2, 20X3, and 20X4. On January 1, 20X2, Lilac reported common stock outstanding of $160,000 and retained earnings of $40,000, and the fair value of the noncontrolling interest was $50,000. It held land with a book value of $90,000 and a market value of $100,000, and equipment with a book value of $40,000 and a market value of $48,000 at the date of combination. The remainder of the differential at acquisition was attributable to an increase in the value of patents, which had a remaining useful life of eight years. All depreciable assets held by Lilac at the date of acquisition had a remaining economic life of eight years. Ephraim uses the equity method in accounting for its investment in Lilac.

Based on the preceding information, the increase in the fair value of patents held by Lilac is

Answer: C

C. $32,000

Based on the preceding information, what balance would Ephraim report as its investment in Lilac at January 1, 20X4?

Answer: B

B. $224,000

Based on the preceding information, what balance would Ephraim report as its investment in Lilac at January 1, 20X5?

Answer: A

A. $236,000