As economists use the word, investment refers only to an increase in capital.

Which of the following occurs if the expected profit increases?

A) Investment demand increases and the demand for loanable funds curve shifts rightward. B) The quantity of investment demanded decreases and there is a movement up along the demand for loanable funds curve. C) The quantity of investment demanded increases and there is a movement down along the demand for loanable funds curve. D) The savings increases and the supply of loanable funds curve shifts rightward. E) Investment demand decreases and the demand for loanable funds curve shifts leftward.

Zane's Vanes is a service that restores old weather vanes. Zane has just spent $125 purchasing a 1920s-era weather vane which he expects to restore and sell for $500 once the work is completed

After having spent $125, Zane realizes that he will need to spend an additional $200 on materials to complete the restoration. Alternatively, he can sell the weather vane without restoring it for $200. What is his marginal benefit if he sells the weather vane without restoring it? A) $75 B) $125 C) $200 D) $300