(i) A, B, C, D, E, F, G and H are eight students each having a different height
(ii) D is shorter than A but taller than G.
(iii) E is taller than H but shorter than C.
(iv) B is shorter than D but taller than F.
(v) C is shorter than G.
(vi) G is not as tall as F.
Which of the following is redundant to answer all the above questions ?

Options

A. (ii) only
B. (ii) and (iii) only
C. (iii) and (iv) only
D. All are necessary to answer the above questions

Answer

D

Explanation

(i)AgtDgtG , (ii)CgtEgtH , (iii)DgtBgtF , (iv)GgtC , (v)F gt G
From all the statements
AgtDgtBgtFgtGgtCgtEgtH
All the statements are necessary to answers the question