Under what conditions will total economic surplus change the most in a market as a result of a change in demand?
a. when supply is perfectly inelastic and demand is elastic.
b. when supply is very inelastic and demand is very elastic.
c. when supply is very elastic and demand is very elastic.
d. when supply is very elastic and demand is very inelastic.
e. when supply is very inelastic and demand is very inelastic.