MULTIPLE CHOICE

Once we have implemented the solution, we are not done with the problem because

a$.$

the solution may not be the best or most efficient

b$.$

the solution may have errors and need testing and fixing before we are done

c$.$

the solution may, at a later date, need revising to handle new specifications

d$.$

the solution may, at a later date, need revising because of new programming language features

e$.$

All of these