Which of the following procedures will correctly return the sum of a list of number?

1. Correct Answer
   Incorrect Answer
   a

   PROCEDURE sumList (numList)
   {
       sum ← 0
       FOR EACH num IN sumList
       {
           sum ← num
       }
       RETURN sum
   }

2. Correct Answer
   Incorrect Answer
   b

   PROCEDURE sumList (numList)
   {
       sum ← 0
       FOR EACH num IN numList
       {
           sum ← num
       }
       RETURN sum
   }

3. Correct Answer
   Incorrect Answer
   c

   PROCEDURE sumList (numList)
   {
       sum ← 0
       FOR EACH num IN numList
       {
           sum ← num + sum
       }
       RETURN sum
   }

4. Correct Answer
   Incorrect Answer
   d

   PROCEDURE sumList (numList)
   {
       sum ← 0
       FOR EACH num IN numList
       {
           sum ← num + sum
           RETURN sum
       }
   }