Because of the recent Ukraine and Russia crisis, capital is flowing into the US market, and the US short-term Treasury Bill rate surged up on 17 Feb., 2022. Which of the following statement must be incorrect? O A. The demand for short-term US Treasury Bill increased on 17 Feb., 2022. O B. While the demand for short-term US Treasury Bill increased and the supply of short-term US Treasury Bill decreased on 17 Feb., 2022. O C. While the demand for short-term US Treasury Bill decreased and the supply of short-term US Treasury Bill increased on 17 Feb., 2022. O D. Both the demand for short-term US Treasury Bill and the supply of short-term US Treasury Bill increased on 17 Feb., 2022. QUESTION 9 John is the owner of a factory producing solar panels in Nooneknow. The marginal cost of producing solar panels is $51, and it is a constant. The fixed cost for John's factory is $10 per day. What is the total cost of producing 10 solar panels in John's factory per day? O A. $520 O B. $510 O C. $500 O D. $610 QUESTION 10 If the demand for e-cars increases as a result of a decrease in the price of electricity, the e-cars and electricity are: O A. complementary goods. O B. normal goods. O C. substitute goods. O D. inferior goods