Consider the following statements:
Other things remaining unchanged, market demand for a good might increase if –
a. price of its substitute increases
b. price of its complement increases
c. the goods is an inferior goods and income of the consumers increases
d. its price falls
Which of the above statements are correct?
a. 1 and 4 only
b. 2, 3 and 4
c. 1, 3 and 4
d. 1, 2 and 3