Which of the following statements are corre regarding the conditions necessary for plant growth?
i. Microelements and macroelements are required for the proper growth of the plant.
ii. For proper growth of plant optimum temperature ranges between \(15^{\circ} \mathrm{C}-25^{\circ} \mathrm{C}\).
iii. In absence of oxygen, process of respiration and release of energy takes place in all plants.
iv. Gravitational force decides the direction of growth of the shoot and root.
v. Light is essential for germination of some seeds and photosynthesis.

1. A i, ii and iii only
2. B ii, iii and iv only
3. C i, ii, iii and iv only
4. D i, iv and v only