【单选题】

One day when I was drinking at bar, I saw a man watching a woman very carefully. The woman was very beautiful but she looked very (1) . Suddenly I found the man (2) and walked towards (3) . He pretended to look for (4) on the ground by her feet. It wasn’t long before the woman noticed him and asked (5) he had lost anything. "Yes. " answered the man, looking very (6) , "I’m looking for a smile that is lost." (7) the woman understood what he (8) and soon there was a smile on her (9) , and it grew bigger. Then the man told her that was just the (10) he was looking for!

After seeing all this, I thought the world will become much nicer if everyone is ready to give his love to others like him.
A、pleased B、sad
C、serious