What forms the boundaries of the suboccipital triangles where the vertebral arteries can be found?
A. Occipital bone, sternocleidomastoid muscle, and trapezius muscle
B. Superior nuchal line, splenius capitis muscle, and semispinalis capitis muscle
C. Rectus capitis posterior major muscle, superior oblique muscle, and rectus capitis posterior minor muscle
D. Rectus capitis lateralis muscle, rectus capitis posterior major muscle, and semispinalis cervicis muscle