Which of the Following Transactions Are Not Related Party Transactions

Which of the following transactions are not related party transactions for an entity?
I. An employee purchased the entity's products on normal trading terms.
II. A subsidiary of the entity supplied raw materials to the entity.
III. The entity lent money to one of its directors.
IV. The entity made an agreement with a trade union about increase in employee's wages.

A) I and II only.
B) II and III only.
C) I and IV only.
D) III and IV only.