Choose the sentence that best combines the two given sentences

Choose the sentence that best combines the two given sentences.
1. You shouldn’t play truant. Or else, you are punished by the teacher.
a. If you don’t play truant, you aren’t punished by the teacher.
b. If you don’t play truant, you won’t be punished by the teacher.
c. Unless you play truant, you will be punished by the teacher.
d. If you played truant, you would be punished by the teacher.