The correct option is
D III
B, a male engineer travels with only G, a teacher in vehicle I. Since each vehicle has persons of both the sexes, so G is a female. C does not travel with A or F. Also, no person travels with any person of the same profession. Since C and D are both doctors, so C does not travel with D. Since A travels in vehicle II, so C travels with E in vehicle III. Since C is a female, so E is a male.
Thus, A, D and F travel in vehicle II. So, their professions must be different. D is a doctor. Since A is not an engineer, so A is a teacher and F is an engineer. A and F, being sisters, are both females.
B and F are two engineers, C and D are two doctors. So, A, E and G are all teachers.
Person | Vehicle | Profession | Sex |
A | II | Teacher | Female |
B | I | Engineer | Male |
C | III | Doctor | Female |
D | II | Doctor | Male |
E | III | Teacher | Male |
F | II | Engineer | Female |
G | I | Teacher | Female |
C travels in vehicle III.