निम्नलिखित में से कौन सा प्रसिद्ध बौद्ध तीर्थ स्थल उत्तर प्रदेश में स्थित है?

Which of the following city-trios forms the 'Heritage Arc' of Uttar Pradesh, a major initiative by the state government to boost tourism by linking three major historical cities?

In which year was the Uttar Pradesh State Tourism Development Corporation established?