When you are doing questions like these remember to look at the negative sign if their a negative sign its a positive if its a positive its still a positive look at it this way negative represents a dirty car the line ( | ) represents a car wash when going through the car wash your car is going to be clean. Clean represents positive but if you go into a car wash with a clean car your going to have a clean car still which means its still a positive.
Look at it this way: Negative=positive Positive=Negative
B - line graph. A line graph should be added because he wants to know how many of available apartments there were during the time of the year and line graphs are usually up and down on the info.
