单项选择题

Accident Report Form Accident A car crashed into a tree. Some people were trapped in the car. Weather conditions There was a heavy rain. Date of call June 3,2006 Time of call 9:30 p.m. Name of caller Mrs Green Place Zhongshan Road, Nanjing Conditions of victims Mr Green hurt his head. Mrs Green hurt her left leg. Their daughter felt frightened. Action Policemen arrived at 9:40 p.m. and sent the victims to Gulou Hospital at 9:45 p. m..

What time did Mrs Green call the police