Q79 1000SC

[confuse mind]

modified the options a little bit.

Although early soap operas were first aired on evening radio in the 1920's, they had moved to the daytime hours of the 1930's when the evening schedule became crowded with comedians and variety shows.


(B) were first aired on evening radio in the 1920's, they were moved to the daytime hours in the 1930's
(C) were aired first on evening radio in the 1920's, they were moved to the daytime hours in the 1930's
[spoiler]
Is there is some difference in the meaning of the above 2 options.
Looks like, but couldn't express it.[/spoiler]

[everything's eventual]

(B) means that the early soap operas were on evening radio for the first time in 1920.

(C) means that the early soap operas were aired first on evening radio and then on something else.

I feel that the answer here in (B)

I hope that my understanding is correct and that I managed to explain it properly.