Which trait distinguishes modern drama from traditional drama?

a) the plot of modern drama does not always follow a strict structure and might end without a clear resolution

b) while traditional drama usualy stuck to five act structure modern drama can usually vary from 3 to 8 acts

c)modern dramas are usually written in verse while most traditional are written in a combination of prose and verse

d) modern dramas genarly feature stock characters while characters in most traditional dramas are distinct and well defined.

which awnser do you think is correct