The number of nails (n) in Samantha's tool belt is represented by the equation 3m + n = 64, where m is the number of minutes since she started working. Which statement correctly interprets the rate of change in the amount of nails in her tool tsit? А) She is using 3 nails per minute.
B) She is using 1 nail every 3 minutes.
C) . She is putting 3 nails per minute into her tool belt.
D). She is putting 1 nail every 3 minutes into her tool belt.​