If a target population is defined as all 2,134 pickup truck owners residing in Tippecanoe County, then:a. asking only owners listed in the telephone directory would be an example of a statistical frame.b. asking 100 owners their attitude toward a new truck style would be an example of a consensus.c. asking all owners their attitude toward a new design would be an example of universal testing.d. asking 80 owners their attitude toward a new design would be an example of a sample.