49th qs.

Five students A,B,C,D,E.
when conversation started B,C were speaking english.When D join them they
shifted to Spanish.A,E knows French .B,E knows Italian.Portoguese was
known
to there of them.Spanish was the most common language between them.
one of them knows five languages.
one of them knows four languages.
one of them knows there languages.
one of them knows two languages.
one of them knows only one languages.
A knows?
B knows?
C knows?
E knows?