The Price at Which Sellers Are Not Willing to Supply

Multiple Choice

The price at which sellers are not willing to supply a good is $70 a unit.As the quantity supplied of the good increases by one unit,the minimum price at which someone is willing to sell that unit increased by $5.What is the equation of this supply curve?

A) P = 70 - 5Q_S
B) Q_S = 70 - 5P
C) P = 5 + 70Q_S
D) Q_S = 5 + 70P
E) P = 70 + 5Q_S