You will be presented with a citation segment from the section of a research paper. Classify the intent behind this citation by choosing from one of the following categories:

- Method: Cites the paper for its methodology or procedure.
- Background: Cites the paper to provide background information.
- Result: Cites the paper for its findings or results.

Your answer should be a single word from the following list of options: ["Method", "Background", "Result"]. Do not include any other text in your response.

Citation sentence:

…that the development of external sexual change of krill is accelerated by photoperiod, although others have shown that the cyclic maturation process is maintained independent of direct control by environmental factors such as food or light (Thomas and Ikeda 1987; Kawaguchi et al. 2007).
Background