What Was the Significance of Cardinal Richelieu's Decision to Aid

What was the significance of Cardinal Richelieu's decision to aid the Lutheran king Gustavus Adolphus's invasion of the Holy Roman Empire during the Thirty Years' War?

A) It demonstrated that political interests had come to outweigh religious concerns.
B) It showed that the French were so desperate to defeat the Germans that they would give money to Sweden, their long-standing enemy.
C) It illustrated the extent to which Protestants had taken over France, as they had sided with the Lutherans in the religious conflict.
D) It betrayed France's military weaknesses and left the country open to an invasion by the Spanish military.