A)The given dice is a fair dice. B)We cannot make any decision. C)We should toss more to make a decision. D)The given dice is NOT a fair dice.

After rolling a dice 100,000 times, the event was observed as 500,521. Choose the correct decision based on the given condition below. In order to test whether or not a given dice is a fair dice, a researcher decided to toss a_ dice 100,000 times and make a decision based on the probability of the observed event (sum of observed values on dices). For the decision making, he/she separates the possible events into (1) high probability events (500,000 or lower) and (2) low probability events (all remaining events)