Colah Company purchased $1 million of Jackson, Inc. 5% bonds at par on July 1, 2018, with interest paid semi-annually. When the bonds were acquired Colah decided to elect the fair value option for accounting for its investment. At December 31, 2018, the Jackson bonds had a fair value of $1.2 million. Colah sold the Jackson bonds on July 1, 2019, for $900,000.

a. The purchase of the Jackson bonds on July 1.

b. Interest revenue for the last half of 2018.

c. Any year-end 2018 adjusting entries.

d. Interest revenue for the first half of 2019.

e. Any entry or entries necessary upon the sale of the Jackson bonds on July 1, 2019.

Prepare Colah's journal entries for the above transaction. (If no entry is required for a transaction/event, select "No journal entry required" in the first account field.)