Question: What is the cheapest option to mail a DVD to Colombia from Hartford, Connecticut using FedEx, DHL, or USPS? (The answer should be a json object with the keys "sender" and "price (usd)")
Answer: sender: USPS
price (usd): 41.75
Explanation: You need to access the DHL, Fedex, and USPS online calculators. You can enter Connecticut and Colombia as the source and destination respectively. USPS has an option for $41.75, DHL has lowest for $146.93 and Fedex has lowest at $246.52.