Consider a dealer bank that borrows money on an overnight basis to finance a large portfolio of bonds that it owns. Specifically the dealer uses the bonds in a repurchase ("repo") agreement with a cash lender. Briefly explain the problem that the dealer will face if the cash lenders demand a higher haircut from the dealer if they are to continue renewing the repo agreement. What options does the dealer have to deal with the problem? Briefly explain. Describe your answer and give examples.