Step by step work out, please! I really want to understand how to get to the answer.

30. The equity accounts of Cam Company total $3,000,000. On 1/1, Ron Company purchased 75% of Cam for $2,400,000. Fair values of net assets equal book values of net assets. What are goodwill and noncontrolling interests? $ 200,000 and $800,000 B. $400,000 and $600,000 C. $ 400,000 and $800,000 D. $600,000 and $800,000 E. $800,000 and $600,000