II. QUESTIONS: (20%, each question 4%) Lee Da-Qian estimates the empirical results for instant noodles for the logarithmic demand function as follows:

However, Wang Xiao-Qian estimates the empirical result of instant noodles is a straight line demand function as follows:

Where D is demand of instant noodles, Y is income, P is price of instant noodles, D is days of raining in a year, F is sale amount of fried pork noodles. The number in parentheses is the t-value.
Questions: