According to the portfolio theories of money demand, what are the four factors that determine money demand?

Question:

According to the theories of money demand, what are the four factors that determine money demand? What changes in these factors can increase the demand for money?
Portfolio
A portfolio is a grouping of financial assets such as stocks, bonds, commodities, currencies and cash equivalents, as well as their fund counterparts, including mutual, exchange-traded and closed funds. A portfolio can also consist of non-publicly...