Researchers Often Present Preliminary Data

Researchers often present preliminary data. Which one of the following best describes preliminary data?

A) Preliminary data are generally rarely presented publicly. Most scientists know the danger of over interpreting preliminary data, and thus their presentation at conferences is highly discouraged before the research itself is published in a peer-reviewed journal.
B) Preliminary data very rarely, if ever, misses the target. By the time the data has been collected, researchers often have a very clear idea of whether or not the claims are supported or rejected.
C) Preliminary data should be interpreted with caution. But even so, science is a peer-reviewed process and these data are widely accepted at conferences to be presented and critiqued.
D) Preliminary data are very useful for researchers. They exist because they are often related to some of the hottest research topics and findings. Furthermore, based on preliminary findings alone, researchers generally are already able to successfully conduct replications without much to worry about.