Diamond Corp. acquired all of Emerald Corp's assets in a Type A reorganizationon December 31,2018.On the date of acquisition, Diamond had accumulated earnings and profits of $400,000, and Emerald had an accumulated earnings and profits deficit of $450,000. For calendar-year 2019, Diamond had current earnings and profits of $100,000 and made cash distributions totaling $300,000 to its shareholders. What amount of the $300,000received by Diamond's shareholders must be reported as dividend income for 2019?