Bryophytes do not attain much heights, due to
(i) absence of mechanical and vascular tissues.
(ii) requirement of external sheet of water for capillary conduction.
(iii) pressure of less developing roots.
(iv) absence of roots and cuticle.
(a) (i) and (ii)
(b) (i), (iii) and (iv)
(c) (i), (ii) and (iv)
(d) (iii) and (iv)