The mass of a liquid solution is 25 grams (g) and its volume is 40 milliliters (m1). A second liquid solution has the same density ( g/ml ) and a volume of 200 m1. Which of the following equations best models the mass in grams, m, of the second liquid solution?

a. 200m=(25)(40)
b. 200m= 25/40
c. 40/25 = m/200
d. 25/40 = m/200