Which of the following events are associated with Muhammad bin Tughlaq?

1.    Transfer of Capital from Delhi to Devagiri (Daulatabad).

2.    Introduction of a token currency.

3.    Increased land revenue on the farmers of Doab (land between Ganges and Yamuna rivers).

4.    Launch of a scheme by which takkavi loans (loans for cultivation) were given to the farmers to buy seed and to extend cultivation.

Select the correct answer using the code given below.