Given two functions, shown below, what are a and b after evaluating this expression:

[a b] = phone ([1 2 6 3], [3 1 5]);

 

   function [bob jane] = phone(alice, sam)
                 if (max (sam) > max(alice))
                     bob = 10;
                     jane = 20;
                 else
                     [bob jane] = tango(sam, alice);
                 end

 

    function  [x y] = tango (a, b)
                    a(1) = [];
                    y = a;
                    x = b;