Critical Reasoning

A medieval manuscript called L contains all eighteen extant tragedies
by the Greek playwright Euripides. Of these, ten called the "select
plays," are accompanied in L by ancient commentaries and also
appear in other medieval manuscripts; this group includes some of
Euripides' best-known works, including the Medea. The other eight,
which appear in alphabetical order, without commentary. The Electra is
one of the alphabeticals.
Which of the following can be reliably concluded on the basis of the
Statements given?
A. Only Euripides' best-known works are accompanied by ancient
commentaries in extant medieval manuscripts.
B. The select plays are accompanied by ancient commentaries
because they were the best known of Euripides' works.
C. No commentaries were written about Euripides' Electra in
ancient times.
D. Euripides' Medea never appears in medieval manuscripts
unaccompanied by ancient commentary.
E. Euripides' Electra does not appear accompanied by a commentary
in any extant medieval manuscript.
Answer:B/E