Data hazards. Computer architecture. If you understand this well and can prove your answer is correct I will thumbs up. Please prove the correct answers for the questions below. The value selected may not be correct (its just what I chose for now). I will thumbs down wrong answers. I cant decide between the first two. Please explain why the one you chose is correct.

Which of the followings is considered data hazard? Select one: a. an instruction source operand is also the destination operand of a previous instruction O O b. an error in the datapath causing data to be sent to incorrect destination c. a slow memory module causing data to arrive late d. a slow clock rate causing the data to slowdown