Can business$-$level code be easily reusable? Why or why not?

a$.$

Yes, because business$-$level code is always modular and well$-$structured.

b$.$

No$,$ because business$-$level code is highly specific to each business and its requirements.

c$.$

Yes, because business$-$level code is always extensively documented.

d$.$

No$,$ because business$-$level code is often poorly designed and difficult to understand.