The Apex Corp. purchased $20,000 of X Co. stock and $25,000 of Y Co. stock in 2015, the first year of Apex's existence. Apex considered both of these available for sale investments. At the end of 2015 X was worth $19,000 and Y was worth $24,000. Apex performed appropriate adjustments at year end. During 2016 Apex sold X for $18,000 and purchased Z stock for $35,000. At the end of 2016, Y was worth $27,000 and Z was worth $36,000. Record all necessary 2016 entries for Apex.