When of the following matters may account for changes in supply?

I – technological advances in an industry
II – changes in labour costs
III – changes in source of supply
IV – changes in levels of taxation

A. I, II
B. I, III
C. II, III, IV
D. I, II, III, IV

Correct Answer: Option D

D. I, II, III, IV

Explanation

A change in supply also known as shifts of the supply curve is determined by other factors affecting supply except price of the commodity when price is constant.