A ray of light is incident along a line which meets another line, 7x−y+1=0, at the point (0,1). The ray is then reflected from this point along the line, y+2x=1. Then the equation of the line of incidence of the ray of light is:
a. 41x - 25y + 25 = 0
b. 41x + 25y - 25 = 0
c. 41x + 38y - 38 = 0
d. 41x - 38y + 38 = 0