A programmer wants to find the largest number in a given list of 20 numbers. Which of the following is an efficient approach to do this?

Option 1 : Use bubble sort to sort the list in descending order and then print the first number of the 

series.

Option 2 : Use selection sort to sort the list in descending order and then print the first number of 

the series.

Option 3 : Implement one iteration of selection sort for descending order and print the first number 

in the series.

Option 4 : None of these

Answer: Option 3