Any truthful auto mechanic will tell you that your standard 5.000 mile checkup can detect only one-fifth of those problems, that are most likely to occur with your car. Therefore, such a checkup is virtually worthless and a total waste of time and money
Which of the following statements, if true, would considerably weaken the above conclusion ?
I. Those problems, which the 5.000 mile checkup will turn up, are the ten leading causes for major engine failure
II. For a new car, a 5.000 mile checkup is required to protect the owner's warranty
III. During a 5.000 mile checkup the mechanic also performs routine maintenance, which is necessary to the continued proper functioning of the car.
A. I only
B. II only
C. I and II only
D. II and III only
E. I, II and III
Which of the following statements, if true, would considerably weaken the above conclusion ?
I. Those problems, which the 5.000 mile checkup will turn up, are the ten leading causes for major engine failure
II. For a new car, a 5.000 mile checkup is required to protect the owner's warranty
III. During a 5.000 mile checkup the mechanic also performs routine maintenance, which is necessary to the continued proper functioning of the car.
A. I only
B. II only
C. I and II only
D. II and III only
E. I, II and III
