When Analyzing the Housing Market,the Supply Curve

When analyzing the housing market,the supply curve

A) will be upward sloping because the higher the price of a house the more that will exist
B) will be horizontal to illustrate that the supply of housing is a stock variable
C) will be downward sloping;that is what went wrong with the housing market
D) will be vertical to illustrate that the supply of housing is a stock variable
E) could be horizontal,vertical or upward sloping depending upon the housing market in question