3. Write a function longest(L) which examines the argument list L and returns the longest string....

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3. Write a function longest(L) which examines the argument list L and returns the longest string. You can assume all of the elements of the list L are strings, and that the list is not empty. Use the approach where there is a variable largestyet which is initialized to the first element of L. Then go through the rest of the elements and update largestyet whenever you encounter a longer string. For example" longest (['blue', 'red', 'the white house', 'green']) would return 'the white house'. 3. Write a function longest(L) which examines the argument list L and returns the longest string. You can assume all of the elements of the list L are strings, and that the list is not empty. Use the approach where there is a variable largestyet which is initialized to the first element of L. Then go through the rest of the elements and update largestyet whenever you encounter a longer string. For example" longest (['blue', 'red', 'the white house', 'green']) would return 'the white house'.