The Germans and the French Were Compelled to Keep Greece

The Germans and the French were compelled to keep Greece in the euro because

A) they feared that the Greek exit would lead to a collapse of the entire euro system.
B) they had invested a large amount in the form of bailout packages to Greece.
C) they relied heavily on Greece for trade and feared that they would lose their trading partner.
D) they feared that their home currencies would be devalued if Greece opted out of euro.