The table below shows the demand for new townhouses for 2018, 2019, and 2020 . a. When the Dtice in 2018 changed from $300,000 to $310,000, In the market for town houses there was a(n) b. Between 2018 and 2019 , there was a(n) in c. Between 2019 and 2020 , there was a(n) in d. When the orice in 2020 changed from $320,000 to $340,000, in the market for town houses there was a(n)