Suppose $\bar { a } _ { c } = 0.75$

Suppose $\bar { a } _ { c } = 0.75$ , $\bar { a } _ { i } = 0.15$ , $\bar { a } _ { g } = 0.20$ , $\bar { a } _ { ex} = 0.10$ , and $\bar { a } _ { i m } = 0.20$ ) For any given $R _ { t } , \bar { a }$ Equals ________ and the economy ________.

A) 0; is in its long-run equilibrium
B) 0.05; has experienced a positive aggregate demand shock
C) 1.05; has experienced a positive aggregate demand shock
D) 0.45; has experienced a positive aggregate demand shock
E) -0.15; has experienced a negative aggregate demand shock