suppose you want to dye a fabric blend of cotton and polyester. which of the following approaches is both feasible and could be the most efficient? select one: a. the first fiber is dyed; the bath is dropped; the second fiber is dyed in a separate bath. b. using one bath, the first fiber is dyed; after all dye is exhausted, necessary processing conditions are changed, and the second fiber is dyed. c. both fibers are dyed simultaneously at the same conditions. d. polyester and cotton can only be dyed individually at the fiber level; it is not possible to dye their blends in fabric form.