Question $21(10$ marks$)$ The step$-$down approach is often used as a method of credit evaluation in assessing the state of institutions in a country. Briefly explain the five $(5)$ major elements of this approach. Question $22(10$ marks$)$ Lending to small businesses can be tricky for lenders and often requires detailed credit analysis. What are the main reasons for the failure of small businesses? Discuss at least four $(4)$ major shortcomings. Question $23(10$ marks$)$ a$.$ Discuss three $(3)$ advantages of using debenture as collc teral $(6$ marks$)$ b$.$ Discuss two $(2)$ disadvantages of using debenture as collat ral $(4$ marks$)$