Find both the parametric and vector equations of the line through (10, 0, 12) in the direction of the vector v = (8, 4, 7).
a. Parametric: x = 10 + 8t, y = 4t, z = 12 + 7t
b. Parametric: x = 10 + 8t, y = 7t, z = 12 + 4t
c. Vector: r = (10, 0, 12) + t(8, 4, 7)
d. Vector: r = (10, 0, 12) + t(7, 8, 4)