Which of the Following Is True About Choosing a Joint

Which of the following is true about choosing a joint design?

A) The ability of a welded joint to withstand stress depends mostly on weld integrity not joint design.
B) Base metal does not play a part in joint design.
C) The rate of travel, penetration, deposition rate, and heat input affect the welds used on some joint designs.
D) The least suitable welding position for most joints is the flat position because it is generally not as strong.