Which sentence shows an idea that would be important to include in a summary of this passage?
A.
"When evening came, the people of the house went to bed, and the playthings began to play."
B.
"Then, for no reason at all, one boy took up the tin soldier and threw him into the stove."
C.
"He had been made last, and there hadn't been enough melted tin to finish him."
D.
"It was darker there than in the tunnel, but the tin soldier remained firm."