Hans Christian Andersen wrote fairy tales, which have been some of the most frequently translated works in literary history, while he wrote plays, novels, poems, and travel books, as well as several autobiographies, which remained almost unknown outside his native Denmark

A. Hans Christian Andersen wrote fairy tales, which have been some of the most frequently translated works in literary history, while he wrote plays, novels, poems, and travel books, as well as several autobiographies, which remained
B. Hans Christian Andersen wrote fairy tales, which, while among the most frequently translated works in literary history, his plays, novels, poems, and travel books, as well as several autobiographies remain
C. Even as Hans Christian Andersen's fairy tales have been among the most frequently translated works in literary history, still his plays, novels, poems, and travel books, as well as several autobiographies, remain
D. Unlike the fairy tales written by Hans Christian Andersen, which are some of the most frequently translated works in literary history, he wrote plays, novels, poems, and travel books, as well as several autobiographies, which remained
E. Although Hans Christian Andersen wrote fairy tales that are among the most frequently translated works in literary history, his plays, novels, poems, and travel books, as well as several autobiographies, remain

[spoiler]OA:E[/spoiler]
contrast :frequently translated work Vs work that remain unknown outside denmark
A: If we remove modifiers
Hans Christian Andersen wrote fairy tales while he wrote plays -- Not the intened contrast
B: ,which, has no verb
C: have been vs remain (present tense Vs General truth )- Incorrect
D:fairy tales not parallel to he
E: Although X , Y
I dont see X parallel to Y.
Although Hans Christian Andersen wrote fairy tales that are among the most frequently translated works in literary history, his plays remain almost unknown outside his native Denmark

Can you explain what I am missing in E