You are given two points on a straight line: (X, Y) = (10, 10) and (-10, -20). You are told this line shifts to the right by 20 units (i.e., the shift is a parallel shift and at any given price consumers now demand 20 more units than they did initially). The equation for the new line is
a. Y = 3/2X - 5
b. Y = 3/2X + 5
c. Y = 2/3X - 35
d. Y = 3/2X - 35