subject selection advice

[IronHorse]

hi everyone

i have opted for the following subjects and little bit confused about selection. Need help from senior members.

==computer science / International relations==
which one should i opt for?
>computer science has very lengthy syllabus and consist of 8 subjects of computer science degree
>computer science paper is not that tough and with good preparation 150 marks can be obtained (according to my analysis)
>i don't know about international relations but what i heard is that the syllabus is not that lengthy and you can prepare easily
>i heard that more than 80% students are opting for international relations. What do you say will it be good scoring subject? or marks become low with saturation? please answer with your experience and research

==Muslim Law==
==USA history==
==Punjabi==
==Environmental science / gender studies / public administration