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Which of the following is true?

  • A."ptr = calloc(m, n)" is equivalent to following
    ptr = malloc(m * n);
  • B."ptr = calloc(m, n)" is equivalent to following
    ptr = malloc(m * n); memset(ptr, 0, m * n);
  • C."ptr = calloc(m, n)" is equivalent to following
    ptr = malloc(m); memset(ptr, 0, m);
  • D."ptr = calloc(m, n)" is equivalent to following
    ptr = malloc(n); memset(ptr, 0, n);

Answer: B

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