Chemistry vs ICT - Which subject to choose for A/L Maths?

My brother did his O/Ls last December and chose ICT (instead of Chemistry) for the A/L Maths. He was so good at computer stuff since his childhood, so we also supported his decision.

However, recently we learned about the restrictions and limited opportunities faced by the ICT students at the university entrance. We are now doubtful on our choice and wondering whether you can clarify us the below doubts.

  • Degree programs offered by local universities for ICT students
  • Tuition classes and school support available for ICT students
  • Pros and cons of choosing ICT over Chemistry
  • Costs of transition - from ICT to Chemistry