If You Use the Pictures Button in a Content Placeholder

If you use the Pictures button in a content placeholder to insert a picture on a slide, and the picture that you insert is smaller than the content placeholder, what happens after you insert it?

A) The picture replaces the content placeholder, but the picture does not change size to match the size of the content placeholder.
B) The picture replaces the content placeholder and changes size so that it completely fills the space where the content placeholder was.
C) A dialog box opens warning you that the picture is not the same size as the placeholder therefore you need to resize the picture in an image editing program or app.
D) The picture is inserted, but it completely fills the slide.