It is important to dissect a problem into manageable pieces before trying to solve the problem because
选项：

A: most problems are too complex to be solved as a single, large activity
B: most problems are solved by multiple people and it is easy to assign each piece to a separate person
C: it is easier to integrate small pieces of a program into one program than it is to integrate one big chunk of code into one program
D: our first solution may not solve the problem correctly
E: all of the above