When deriving the equation of the line y = 12x by using a pair of similar triangles, which

of these statements is most accurate?

a. neither triangle should be a right angle and at least one of the triangles should have a vertex at the origin

b. both triangles should be right angles and at least one of the triangles should have a vertex at the origin

c. neither triangle should be a right angle and both triangles should have a vertex at the origin

d. both triangles should be right angles and both triangles should have a vertex at the origin