Using one or more of the four bonds, put together a $ XXXXXXXXXXimmunised portfolio for Grace. Because this portfolio will now be immunised, will Grace be able to treat it as a buy-and-hold...

Using one or more of the four bonds, put together a $200 000 immunised portfolio for Grace. Because this portfolio will now be immunised, will Grace be able to treat it as a buy-and-hold portfolio—one she can put away and forget about? Explain.