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 only in L, are called the "alphabeticals" because they 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? ["Only Euripides' best-known works are accompanied by ancient commentaries in extant medieval manuscripts", "Euripides' Electra does not appear accompanied by a commentary in any extant medieval manuscript", "No commentaries were written about Euripides' Electra in ancient times", "Euripides' Medea never appears in medieval manuscripts unaccompanied by ancient commentary"]