the answer is B cuz once it is tooo much cooked it becomes sticked to the grill and will end up falling in pieces.
The correct answer is B. The fish will fall apart if it is fully cooked on the grill.
Fish is the most tender meat and if it is cooked above the time, it will easily fall apart. So while cooking fish, we have to take extra care of the time, otherwise it will stick to the pan and will crumble. To avoid crumbling, taking care of the cook time is the key.