The Chinese traveller Yuan Chwang (Hiuen Tsang) who visited India recorded the general conditions and culture of India at that time. In this context, which of the following statements is/are correct? 1. The roads and river-routes were completely immune from robbery. 2. As regards punishment for offences, ordeals by fire, water and poison were the instruments for determining the innocence or guilt of a person. 3. The tradesmen had to pay duties at ferries and barrier stations. Select the correct answer using the codes given below.