Samantha has inherited a fortune of SGD 20 million. She is keen to see how she can invest this sum in the financial markets for maximal returns. She did some research and discovered a few possibilities she could pursue:

1) Set up a FX portfolio with the major trading currencies, e.g., USD, Euro, Yen, SGD, AUD etc. and see how she can trade and benefit on her own.

2) Invest this amount into stocks of firms that are domiciled in the countries of these major trading currencies, e.g., buy shares of firms in the US, Europe, Japan, Singapore etc.

3) Open an account with one of the major asset management firms and let them manage her portfolio, e.g., a mutual fund.

Evaluate each of the above choices for their advantages and disadvantages. Is there another option she could pursue?