Select the correct combination of the statements (i-iv) regarding the characteristics of certain organisms.
(i) Methanogens are archaebacteria which produce methane in marshy areas
(ii) Nostoc is a filamentous blue-green alga which fixes atmospheric nitrogen
(iii) Chemosnthetic autotrophic bacteria synthesise cellulose from glucose
(iv) Mycoplasma lack a cell wall and can survive without oxygen
The correct statements are
A. (ii), (iii)
B. (i), (ii), (iii)
C. (ii), (iii), (iv)
D. (i), (ii), (iv)