How did alliances contribute to the outbreak of World War I? Select all the answers that apply.
A.
Countries were less willing to settle disagreements peacefully since they had military support from allies.

B.
Limited support between allies and reluctance to get involved led to frustrations within alliances.

C.
Loyalties were clearly proclaimed so enemies would know whom they were attempting to fight.

D.
It became impossible for any European country to maintain neutrality during the lead-up to the conflict.

E.
Small quarrels could quickly become larger conflicts when countries forced their allies to get involved.