Based on the statement given below which of the following option is correct:-Whenever Preeti’s father is in town, she abstains from school and goes to her aunt’s house.

• A. If Preeti has not abstained from school or she has not gone to her aunt’s house, it means that her father is not in town.
• B. If Preeti has not abstained from school but her father is in town, then she will definitely go to her aunt’s house.
• C. If Preeti has abstained from school but she has not gone to her aunt’s house, it means that her father is not in town.
• D. Both (a ) and (c )