who is the best?

There are N people want to choose the best person. Each person select the best person $a_i$, .John wants to know that who received the most number of votes.

The first line contains a single integer $T(1 \leq T \leq 50)$,indicating the number of test cases.
Each test case begins with an integer $N(1 \leq N \leq 100)$,indicating the number of person.
Next N lines contains an integer $a_i(1 \leq a_i \leq N)$.

For each case, output an integer means who is the best person. If there are multiple answers, print the minimum index.

2
10
1
2
3
4
5
6
7
8
9
10
5
3
3
3
3
3

1
3

BestCoder Round #20