Assume you hold 10-year annual coupon bonds and it is highly likely the market interest rates will increase next day. From this information it is recommended ______________________.

a.to switch immediately your 10-year bonds for bonds with longer maturity

b.to switch immediately your 10-year bonds for bonds with shorter maturity

c.to switch immediately your 10-year bonds for zero coupon bonds with longer maturity

d.to sell immediately all your bonds