Jimmy, age 62, and Michela, age 55, 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 good sight, is a full-time student and has income of $4,800. Which of the following statements is correct regarding Jimmy and Michela's ability to claim the twins as dependents?

A) The couple can claim both twins as dependents.

B) The couple cannot claim either twin as a dependent.

C) The couple can only claim the daughter as a dependent.

D) The couple can only claim the son as a dependent.