What can be done to make Facebook posts most effective?

Question $3$ options:

A$)$

Put the most important information at the end of the post

B$)$

Posts about product lines as often as possible

C$)$

Post on Mondays or Tuesdays between $10$:$00$ a$.$m$.$ and $5$:$00$ p$.$m$.$

D$)$

Keep video, posts, and photos familiar and consistent

E$)$

Keep posts to less than $40$ characters