Start with two integer lists a and b, each of length 2. Consider the sum of the values in each list. Return the list which has the larger sum. In the event of a tie, return a.
For example:
biggerTwo([1, 2], [3, 4]) → [3, 4]biggerTwo([3, 4], [1, 2]) → [3, 4]biggerTwo([1, 1], [1, 2]) → [1, 2]