What is the equation for GDP?

Based on the figure above, short-run equilibrium occurs at the price level of

A) 120 and real GDP of $5 trillion. B) 130 and real GDP of $10 trillion. C) 140 and real GDP of $15 trillion. D) 130 and real GDP of $15 trillion.

If tablets have an absolute price elasticity of 1, the demand for tablets is

A) unit elastic. B) inelastic. C) perfectly elastic. D) elastic.