For each of the following questions, arrange the sentences A, B, C, and D between sentences 1 and 6 to form a logical sequence with sentence 1 and sentence 6 as the starting sentence and the concluding sentence respectively.
(1) Innovation is work.
A- There are people who are clearly more talented innovators than the rest of us.
B- It requires knowledge.
C- It also requires great ingenuity.
D- But that alone is not enough.
(6) And this is because they are able to imagine and conceive what we do not even consider possible.