1-prepare the journal entry to record the unrealized gain/loss at December 31, 2017.

2-Use the information above to prepare the journal entry to record the sale of stock on March 1, 2018.

3-Use the information above to prepare the journal entry to record the unrealized gain/loss at December 31, 2018.

At December 31, 2017, Isotope Co. held the following investments in stock that are classified as available-for-sale securities. All investments were acquired in December 2017. Security Cost $1,500 3,000 Market Value $1,350 3,050 On March 1, 2018, half of the B Company stock was sold for $650. Isotope Co. acquired additional security C stock during 2018. At December 31, 2018, the following investments in stock were held by Isotope: Security Cost $ 750 3,500 Market Value $550 3,850