Concept:Test each statement independently to see whether it fixes the person born in March.
Explanation:Statement I: Two persons between
B and
E means their positions differ by 3.
B was born in a 30-day month, so
B is April or June. The condition "same number before E as after D" fixes
D=7−E. The valid arrangement is:
Thus,
C is born in March. So Statement I alone is sufficient.
Statement II:
C was born in March, and
D is immediately before
C, so
D is in January. "Same before C as after F" gives
F in June. Two persons between
B and
E then places
B in April and
E in July.
So Statement II alone is also sufficient.
Statement III:
F is after May, and three persons are between
F and
D. This gives two possible cases:
(D,F)=(January,June) or
(March,July). One person between
B and
D gives
B in April or May respectively. Therefore
C's month is not fixed.
So Statement III alone is not sufficient.
Since either Statement I or Statement II alone answers the question, the correct choice is Option D.
Answer:Option D: The data given in Either Statement I or Statement II is sufficient to answer the question.