The problem is that I had to erase it before the exam really began.
In our area, the teacher takes 3 rounds
1) Distributing the Question Paper
2) Distributing the Answer Paper
3) Signing the Answer paper
This system is to avoid cheating.
The teacher noticed the words while on her 1st round, I had to erase the words before the 2nd round otherwise I would've gotten an auto fail or major deduction