Calculate consumer surplus and producer surplus using the diagram below.

a$.)$

Consumer Surplus $=$ $$10$ million

Producer Surplus $=$ $$5$ million

b$.)$

Consumer Surplus $=$ $$5$ million

Producer Surplus $=$ $$10$ million

c$.)$

Consumer Surplus $=$ $$20$ million

Producer Surplus $=$ $$20$ million

d$.)$

Consumer surplus $=$ $$10$ million

Producer surplus $=$ $$10$ million