The Portfolio Expected Return Considers Which of the Following Factors

The portfolio expected return considers which of the following factors?
I. the amount of money currently invested in each individual security
II. various levels of economic activity
III. the performance of each stock given various economic scenarios
IV. the probability of various states of the economy

A) I and III only
B) II and IV only
C) I, III, and IV only
D) II, III, and IV only
E) I, II, III, and IV