[
  "Write the decimal as a fraction: 3 decimal places means denominator is 1000. Then simplify by finding the GCD.",
  "0.075 = 75/1000. Divide numerator and denominator by 25: 75 / 25 = 3, 1000 / 25 = 40. So 75/1000 = 3/40.",
  "0.075 = 3/40. Answer: option C."
]