39. Most business letters today are written on a wordprocessor, which can help writers find and fix typoswithout having been used correction fluid. Also, be sure toselect a clear, traditional type font, set in a readable  ize,and use only a printer that can produce dark, high-grade type.V. DialogueThomas: Do you have the time?
(A)written on
(B)writers find
(C)having been used
(D)a readable