a triangle has the following vertices (-1,1), (6,-2)and (3,5) if the scale factor of 3, what will be the vertices of the image

a.(-3,3), (18,-6), (9,15)
b. (3,3), (18,6), (9,15)
c.(-3,3), (18,6),(9,15)
d.(3,3), (18,-6), (9,15)​