4 Which of the following are the benefits of special shape of an aeroplane? (i) Fluid friction is reduced. (ii) Fluid friction is increased. (iii)Energy loss is as low as possible. (iv) An aeroplane can fly like a bird. (A) (i), (ii) (B) (i), (ii), (iii) (C) (i), (iii), (iv) (D) (i), (ii), (iii),(iv)
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