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Computer Tally Difficulty: Medium

Is the following Python code valid? class B(object): def first(self): print("First method called") def second(): print("Second method called") ob = B() B.first(ob) Which of the following is not a valid alignment attribute? What is the significance of the 'volatile' keyword in C? Which of these can be used to differentiate two or more methods having the same name? What will be the output of the following C code? #include <stdio.h> #include <string.h> int main() { char line[3]; FILE *fp; fp = fopen("newfile.txt", "r"); while (fgets(line, 3, fp)) fputs(line, stdout); return 0; }