KP Morgan, a large money market mutual fund, invests exclusively (i.e.,100\%) in money market instruments as specified in its investment mandate. Based on the above information, determine which of the portfolios below is most likely to be the investment portfolio held by KP Morgan. (Note the percentages before the financial instruments represent their portfolio weights) Portfolio A: 30% bank deposits, 40% commercial papers, 30% "munis" Portfolio B: 30% T-bills, 40% Eurobonds, 30\% 1-week repos Portfolio C: 30% certificate of deposits, 40% preferred stocks, 30% Yankee bonds Portfolio D: 30% 3-day repos, 40% bank bills, 30% commercial papers