Why Is It Important That Study Results Should Not Be

Why is it important that study results should not be described in the title?

A) The researchers should not easily give out the key takeaway from their study.
B) The publishers want the readers to read the whole article, not just the title.
C) The study results are too complex to be concisely stated in the article title.
D) The title of the article should be catchy, and describing the results would make it boring.