Alberto, the manager of a clothes shop, is checking a report that says they sold 30 shirts and the receipts totaled $252 in one day. Each long-sleeved shirt costs $12 and each short-sleeved shirt costs $9. He wants to know if the report is accurate, so he made the following graph to find out how many of each shirt type were sold based on the information that he has.
If x is the number of long-sleeved shirts and y is the number of short-sleeved shirts, which of these statements is true about the solution that the graph shows?
A) The solution is correct.
B) The solution is incorrect.
C) The solution is correct, but the number of both shirt types is not reasonable.
D) none of the above.