What is the best currency to take to Sri Lanka?

The official currency of Sri Lanka is the Sri Lankan Rupee (LKR). All transactions in Sri Lanka are conducted in Sri Lankan Rupees; however, with the rise of tourism, this has changed somewhat. Some Hotels, restaurants, and tourist attractions accept US dollars, pounds, or euros. So, you can bring US dollars, Pounds, or euros. Or not, exchange your currency for Sri Lankan currency upon arrival in Sri Lanka. (But only contact banks or authorized dealers for that), You can also use your credit card in some places. You can also withdraw Sri Lankan currency from ATMs with Visa and MasterCard.