The AMS technical team has embarked on a quality improvement effort on the upload speed for its Internet service subscribers. Upload speeds are measured on a device that records results on a standard scale in which the target value is 1. During this time they collected data and monitored the process using the X-bar R chart. Based on the results shown below, we can say that: Test Results for Xbar Chart of Upload Speed TEST 7. 15 points within 1 standard deviation of center line (above and below CL). Test Failed at points: 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25 Question 9Select one: a. The process is stable. b. The process variation has been reduced. c. The process mean has increased. d. Both A and B. e. Both A and C