Sam takes photos at Callie's wedding. Sam thinks Callie owes him $1,000 for the wedding, while Callie thinks she owes Sam only $750. Callie sends Sam a check for $750. Which of the following is true?
1) Sam received the full amount he believed he was owed
2) Sam received less than the amount he believed he was owed
3) Sam received more than the amount he believed he was owed
4) Sam did not receive any payment
