How did Muybridge's work influence painters like Thomas Eakins?
 Choose all answers that are correct.
 A.
 Eakins painted directly onto photographs to make paintings.
 B.
 Eakins used photographs as a teaching tool with students.
 C.
 Eakins traced subjects in photographs to make some paintings.
 D.
 Eakins used photographs to study the human body and the phases of action.