Which of the following is correct about the appendicular skeleton ?
i. The clavicle articulates with the glenoid cavity.
ii. Pectoral and pelvic girdle bones help in the articulation of the upper and the lower limbs respectively with the axial skeleton .
iii. The calvicle is a triangular flat bone situated in the dorsal part of the thorax between the second and seventh ribs .
iv. There are 8 carpal bones in hand .