If this survey were done by telephone, list three difficulties the companies might have in obtaining random results. (Select all that apply.) a. Only people over the age of 24 would be included in the survey. b. Children who do not answer the phone will not be included. c. Individuals may choose to participate or not participate in the phone survey. d. The individuals in the sample may not accurately reflect the population. e. Individuals may not tell the truth about buckling up.