40) Ben, age 67, and Karla, age 58, have two children who live with them and for whom they provide total support. Their daughter is 21 years old, blind, is not a full-time student and has no income. Her twin brother is 21 years old, has goud sight, is a full-time student and has income of $4,800. Which of the following statements is correct regarding Ben and Karla's ability to claim the twins as dependents? A) The couple cannot claim either twin as a dependent. B) The couple can claim both twins as dependents. C) The couple can only claim the daughter as a dependent, D) The couple can only claim the son as a dependent