A Well-Written Scientific Manuscript Is Usually Described Having the Shape

A well-written scientific manuscript is usually described having the shape of:

A) A pyramid: it starts specific with a research question, and becomes wider in scope as the authors discuss the research implications of the overall findings.
B) An ice-cream cone: the research starts broadly with a body of literature, but ends with specific findings that are based on the study.
C) An hour-glass: it starts broad, gets specific, and then ends broad.
D) A cylinder: every section should pivot logically on the section before.