There were a number of reasons that led to the defeat of the Rajputs, the rulers of Northern India. Consider the following sentences regarding causes for the failure of the Indian army.

1. Indian rulers lacked unity: they were busy in their mutual conflicts.                                      

2. The military techniques used by Indian army were out of date and far inferior to those used by Muslims.   

3. Indian army mainly depended on elephants while Muslims possessed fast moving cavalry.

Select the correct option from the codes given below: