He remembered his faithful lady in Verona; he called to mind the duty he owed his dear friend Valentine. But for the moment his weak and selfish nature carried him beyond control.
Which sentence best states how the excerpt develops the theme of the passage?
A.
It reinforces the inconsistency of friendship.
B.
It explains the difficulty of owing a favor to someone.
C.
It demonstrates the power of true love.
D.
It reveals Proteus's struggle between loyalty and passion.
