If an investment adviser representative is reviewing a client's IRA portfolio, she would be most concerned with the inclusion of which of the following investments? A. Although it is not prohibited to place municipal bonds in an IRA, a review of the appropriateness must be performed. B. Since an IRA is a tax-deferred account, the tax-exempt nature of the municipal bond loses its effectiveness. C. Instead, the placement of a higher yielding investment is more suitable.