5 A high school principal wants to rate student experience on the school bus He stops the first fifteen students who come into the school one morning and asks them to rate their school bus experience on a scale of 1 worst to 10 best Is the principal s method of surveying students valid A Yes it is valid because it was a scaled rating B Yes it is valid since the students were chosen randomly C No it is invalid because the bus driver should have conducted the survey D No it is invalid since the students were chosen by convenience