Lines & Angles

In a pair of adjacent angles, (i) vertex is always common, (ii) one arm
is always common, and (iii) uncommon arms are always opposite
rays
Then
(a) All (i), (ii) and (iii) are true
(b) (iii) is false
(c) (i) is false but (ii) and (iii) are true
(d) (ii) is false