Ada lived with her son robert and his wife barbara. ada's only source of income was a $1500 fully taxable pension which she spent on clothes and recreation. robert and barbara paid ada's medical and drug expenses of $600 for the year. robert and barbara's total food expense for the household was $6000. the fair rental value of the lodging provided ada was $1200 for the year based on the cost of similar room facilities. what was ada's total support for the year for purposes of determining whether robert and barbara can claim ada as a dependent? a. $3300b. $5300c. $1800d. none of the answers are correct.