Which one is a wrong statement about sieve tubes?
i) They are found in pteridophytes and gymnosperms.
ii) They have companion cells.
iii) Sieve areas do not form sieve plates.
iv) Sieve areas are not well differentiated.
v) They consist of vertical cells placed one above the other forming long tubes connected at the end walls by sieve pores.
A(i), (ii) and (iii)
B(i), (iii) and (iv)
C(ii) and (iv)
D(v) only