Margaret and her sister support their mother and together provide 85 percent of their mother's support. If Margaret provides 40 percent of her mother's support: a.Neither Margaret nor her sister may claim their mother as a dependent. b.Margaret and her sister may split the dependent status of their mother. c.Margaret may claim her mother as a dependent if her sister agrees in a multiple support agreement. d.Her sister is the only one who can claim their mother as a dependent. e.Both Margaret and her sister may claim their mother as a dependent.