George and Wanda received $30,200 of Social Security benefits this year ($12,000 for George; $18,200 for Wanda). They also received $5,000 of interest from jointly owned City of Ranburne Bonds and dividend income. What amount of the Social Security benefits must George and Wanda include in their gross income under the following independent situations? Note: Leave no answer blank. Enter zero if applicable. Required: a. George and Wanda file married joint and receive $8,000 of dividend income from stocks owned by George. b. George and Wanda file married separate and receive $8,000 of dividend income from stocks owned by George. c. George and Wanda file married joint and receive $30,000 of dividend income from stocks owned by George. d. George and Wanda file married joint and recelve $15,000 of dividend income from stocks owned by Georce