PLS HELP ME ! What's the dry running program of this Input :
// Java program to illustrate for loop.
class forLoopDemo {

public static void main(String args[]){

int sum = 0;

// for loop begins
// and runs till x <= 20
for (int x = 1; x <= 20; x++) {

sum = sum + x;

}
System. out. println("Sum: " + sum);

}

}
Output :
Sum : 210

When early motion pictures played in movie theaters, they were often accompanied by live organ or piano music. which of the following are the most likely reasons that this happened? (select all that apply). the music was provided to distract audience members from the loud sounds made when filmstrips were changed. the music accompanied the movies because the movies were silent and audiences were used to hearing music during plays in theaters. the music usually was played before, and sometimes after the movie, as an alternative form of entertainment. the music viewers to interpret the dramatic action in the films.