If you are located in the bottom row of a standard QWERTY keyboard and you reach straight down and use your right pointer finger (which is also referred to as R4) to key your letter, you are pressing the letter that is directly below the right pointer finger's home position (the F key).
On a QWERTY keyboard, the letter directly below F on the bottom row is "V." However, since "V" is not one of the options provided, I assume you are asking about the right hand's position:
- N is keyed with the left hand.
- X is keyed with the left hand.
- C is keyed with the left hand.
- M is keyed with the right hand.
Thus, the correct answer is M since it is the only key listed that is pressed with the right hand on the bottom row.