Explanation:

First, second and Fourth statements are correct.
‘Iqta’ is an Arabic word denoting a sort of administrative regional unit. It is usually considered equivalent to a province.
Initially the Delhi Sultans had divided their empire into several ‘Iqtas’ or provinces or spheres of influence and put them under the charge of officers called ‘Iqtadars’ (governors).
The number of Iqtas was not fixed. There was no uniformity in their administration.
Besides ‘Iqtadar’, other names of the heads of an Iqta’ was Naib Sultan, ‘nazim’ might’ or ‘wali’.
Iqtas were given nor only to Muslims but also to Hindus
Each ‘Iqta’ was under the charge of an experienced general who generally was the member of the royal family or a notable ‘Amir’ (noble) and confidant of the Sultan.
Duties and powers of the Iqtadar:
1. He was under the supervision of the Central government and carried on orders of the Sultan.
2. He enjoyed the same powers in the province as the Sultan enjoyed in the empire.
3. He maintained large armies and was required to send the same when asked by the Sultan.
4. He maintained order in the territory under his charge and protected the life and property of the people.
5. He appointed soldiers in his army.
6. He collected revenue from the people of his territory.
7. From the revenue thus collected he administered expenditure on the maintenance of his army, his pay and other administrative expenditure and deposited the rest in the state treasury.
8. He sent yearly report of his income and expenditure to the centre.
Third statement is incorrect. The iqtas were transferable, i.e., the holders of iqtas-Iqtadars-were transferred from one region to other every three to four years.
Later on Iqtadars began to treat their Iqtas as hereditary and was passed or transferred from father to son.