A sales representative plans to visit each of six companies – A, B , C , D , E and F – exactly once during the course of a day. She is setting up her schedule for the day according to the following conditions: 

She must visit B before D. 
She must visit A before B and E. 
The third company she visit must be C. 

1. Which of the following must be true about the sales representative’s schedule ?
 
1. She visits A before D. 
2. She visits B before E. 
3. She visits C before A. 
4. She visits C before F. 

2. Which of the following could be the order in which the sales representative visits the six companies ?
1. C, E , A , B , D , F 
2. C, F, A , E , D , B 
3. A ,F, C, B , E, D
4. F, A , C, D, B, E