Which of the given statements is incorrect about global gene regulation?

• A. One way to obtain useful information about a genome is to determine which genes are induced or repressed in response to a phase of the cell cycle
• B. Sets of a gene whose expression rises and falls under the same condition are likely to have a related function
• C. Sets of a gene whose expression rises and falls under the same condition are likely to have dissimilar functions
• D. Cell cycle is a developmental phase, or a response to the environment