The portrait studio in a Texas town takes photos for special events like graduations. The studio experienced an increase in the number of clients per month from 50 to 60 following a decrease in their price from $100 to $90. What can you conclude about the demand for the studio's service?

Group of answer choices

a. it is elastic

b. it is perfectly inelastic

c. it is inelastic

d. none of the other choices is correct

e. it is unit elastic