In 1980, UP earned rupees 17 million in tourist revenue. By 1990, tourist revenue doubled and in 2000, it reached the sum of rupees 132 million. Each of the following, if true, may explain the trend in the tourist revenue except :

Correct option is D

The number of total hotel rooms has increased:

While an increase in hotel rooms may accommodate more tourists, it does not directly explain the increase in tourist revenue. The revenue depends on the number of tourists and their spending behavior, not just the availability of hotel rooms.