Css 2019 opt subj selection plz help
 

Asalam-o-alaikum i did my B.A choosing economics nd poli.science as optional subj: i did my intermediate as science student in biology i have 2 questions kindly reply.

1-what should be the study level of an optional subject? Masters or degree level ?
2-since im a B.A student kindly suggest me good opt subj that will help me in easier study.

My optional subjects..
1- economics 200
2-Pol. Science 200
3-zoology 200
Kindly suggest me a good opt combo if im wrong my zoology is better than botany nd i alrdy have grasp over this subject as well