On Friday Mary was a referee at 3 soccer games. She arrived at the soccer field 20 minutes before the first game. Each game lasted for\[1\frac{1}{2}\]hours. There were 5 minutes brake between each game. Mary left 15 minutes after the last game. How long, in minutes, was Mary at the soccer field?

• A. 300 minutes  
• B. 305 minutes
• C. 315 minutes  
• D. 320 minutes