Which of the following were features of the postal system of India as described by Ibn Battuta? 1. The foot post carries a ringing bell in one hand. 2. The horse post is called uluq, stationed at a distance of every four miles. 3. The foot post or dawa has one station at every four kos of distance. 4. The foot post is quicker than horse post. Select the correct answer using the code given below:

Ibn Battuta, who visited India during the reign of Muhammad bin Tughlaq, described the Indian postal system in detail. The horse-post called 'uluq' was stationed at every four miles, and the foot post carried a copper bell that was rung to announce arrival. Ibn Battuta also noted that the foot post was quicker than the horse post because runners were stationed at shorter intervals (every one-third of a mile). The foot post stations (dawa) were located at every one-third of a mile, not every four kos, so statement 3 is incorrect. Hence statements 1, 2 and 4 are correct.