33 rpm made 78 rpm go out of market
CD replaced 33rpm and will ....
A) there is no reference of the record playing public
B) It is the record industry that is getting impacted. Rather the profits will reduce
C) There is no reference of 2nd hand market.Probably 33 rpm already made this impact
D) Plausible - though there is no reference of the manufacturers
E) there is nothing in the passage that relates CD with computer generated music.
I would go with D