Which of the following statements are TRUE regarding the sale of a long position in a restricted long margin account? I. 50% of the proceeds of the sale are credited to SMA
II. 100% of the proceeds of the sale are credited to SMA
III. There is a 0% retention requirement of the sale for a restricted account
IV. There is a 50% retention requirement of the sale for a restricted account

a. I and III
b. I and IV
c. II and III
d. II and IV

David consumes two things: gasoline (g) and bread (b). david's utility function is u(g, b) = 10g^0.25 b^0.75. use the lagrange technique to solve for david's optimal choices of gasoline and bread as a function of the price of gasoline, p_g, the price of bread, p_b, and his income m. with recent decrease in the price of gasoline (maybe due to external shock such as shale gas production) does david increase his consumption of gasoline? for david, how does partial differential g/partial differential p_g depend on his income m? that is, how does david's change in gasoline consumption due to an increase in the price of gasoline depend on his income level? to answer these questions, find the cross-partial derivative, |partial differential^2 g/partial differential m partial differential p_g.