Answer:
Explanation:
Either is correct. It depends on what you mean.
Navin was brilliant (so of course) he got an A+ in BLE. This has the meaning of he was brilliant before he got the A+ and it stands to reason that he should get an A+
Navin was brilliant therefore he got an A+ in BLE. His brilliance spilled into everything including BLE. (What is BLE anyway).
Navin was brilliant however he got (an unexpected) A+ in BLE. However has a slightly different meaning here. He might have been brilliant in computer science or Math, but his A+ in BLE was unexpected
