c) Write a function named mm = myMean (x, id) that calls myGeomean and my Harmmean. If id = 1, it will return the geometric mean of the positive numbers of x in mm, if id=2, it will return the harmonic mean of positive numbers of x in mm, and it will return -1 in mm for any other value of id. Verify your function one vector of your choice (with a length n > 5, and the vector must include negative elements) with three different values of id = 1, 2, 3, and print your results.