The marginal cost of educating a student is $30,000, and this cost is independent of the number of students. The figure above shows the marginal private benefit that a student receives from education

In the figure above, the SLF curve is the supply of loanable funds curve and the PSLF curve is the private supply of loanable funds curve. The equilibrium interest rate is ________ percent and the equilibrium quantity of loanable funds is ________

A) 6; $1.6 trillion B) 4; $1.8 trillion C) 4; $1.4 trillion D) 6; $2.0 trillion E) 4; $2.0 trillion

In the long run, the unemployment rate

A) is equal to the expected unemployment rate. B) is zero. C) can take on any value. D) is equal to the natural unemployment rate. E) must be equal to the expected inflation rate.