The Textbook Analysis of International Finance Makes Some Simplifying Assumptions

The textbook analysis of international finance makes some simplifying assumptions.What are they?
I.International transfer payments are ignored because they account for a relatively small portion of international transactions.
II.International transfer payments are ignored because they account for a relatively small portion of international transactions but inter-government transfer payments, such as foreign aid, are included.
III.Payments to foreign owners of factors of production used in the domestic country are treated as imports and payments received by domestic owners of factors of production used in foreign countries are treated as exports.
IV.Payments to foreign owners of factors of production used in the domestic country are treated as foreign purchases of domestic assets, and payments received by domestic owners of factors of production used in foreign countries are treated as domestic purchases of foreign assets.

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