a. Point a is where LONG-RUN DEMAND and OLD SUPPLY cross. 
b. #1 passes through Point a and is steeper than LONG-RUN DEMAND.
c. NEW SUPPLY is to the right of OLD SUPPLY.
d. Point b is where #1 and NEW SUPPLY cross.
e. Point c is where LONG-RUN DEMAND and NEW SUPPLY cross.
f. #2 passes through Point c, is to the right of #1, and is steeper than LONG-RUN DEMAND.