Sketch the graph of y = cos x and identify the properties that apply. i. The function is decreasing on the interval | - It, - > ii. The range is [ - 1, 1]. iii. The function obtains a relative maximum at x = 2xn, where n is any integer. Choose the correct graph of the function. O A. O B. O C. OD. Ay Ay 2x 2x x i. Is the function decreasing on the interval ? O No O Yes ii. Is the range equal to [ - 1,1]