Put the following events in the correct order ______.
A．The Texas Revolution started, Smith got married, Smith volunteered for service, Mexican troops tried to stop him from seeing his family.
B．Smith got married, the Texas Revolution started, Mexican troops tried to stop Smith from seeing his family, Smith volunteered for service.
C．Smith got married, the Texas Revolution started, Smith volunteered for service, Mexican troops tried to stop him from seeing his family.
D．The Texas Revolution started, Smith volunteered for service, Smith got married, Mexican troops tried to stop him from seeing his family.