Big P has become a Physical Education teacher at Hack International School.

Today, the students of class XII have been very undisciplined and he decides to punish them all.

He makes all of the N student (numbered 1 to N ) to stand in a line and asks them to sit down on their knees.

Students know that Big P is a very cruel and sadistic person and students start to sit down themselves when they see a friend sit down.

However, there are always some students who do not follow the trend. Now when Big P sees that happen , he slaps that student and makes him sit down. The same process as above is followed and is stopped when any - one student in the line refuses to sit down by himself.

Given the students that Big P slaps to make them sit down , you need to tell the total no. of students who sat down in that line.

Note: It is not necessary that if A is friend of B then B is also friend of A.

Input Format :
First Line Contains an integer T denoting no of test cases.
Each test case begins with a line containing three integers N, F, S where N is the number of students in the line. Next F lines have two integers A and B denoting the friendship between the students A and B. Next S lines have one integer X denoting the student that was slapped by Big P .

Output Format:
For each test case, output a line containing one integer, the total number of students that sit down in that line.

T ≤ 10 , N ,F , S ≤ 10000

SAMPLE INPUT
1
3 2 1
1 2
2 3
2

SAMPLE OUTPUT
2

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