Consider an Economy That Produces Only Smartphones and Laptops

Consider an economy that produces only smartphones and laptops. Last year, 10 smartphones were sold at $800 each, and 5 laptops were sold at $1,000 each, while this year, 15 smartphones were sold at $900 each, and 10 laptops were sold at $1,100 each. Real GDP this year, using last year as a base year, is:

A) $22,000.
B) $22,000
C) $24,500.
D) $24,500
E) $11,000.
F) $11,000
G) $13,500.
H) $13,500