Can someone help me with this question please? I know the answer is C because it's already given, but I wanna know how it got those numbers? Show your work please and thanks in advance!

Given answer: C

DESIGN PAGE LAYOUT REFERENCES REVIEW MAILINGS EW VIEW During 2017 Logic Company purchases 60 shares of Walen common stock for $30 per share. During the year Logic sells 15 shares of Walen stock for $35 per share. At December 31, 2017 the market price of Walen stock has decreased to $28 per share. Considering all gains and losses (realized and unrealized), what is the net gain (loss) from the Walen investment during 2017? $75 ($120) c. ($15) ($45) ($90) (87 d (190) RDS ENGUSH (UNITED STATES)