Earth Movers & Shakers Operates 3 Iron Ore Mines

Multiple Choice

Earth Movers & Shakers operates 3 iron ore mines.The table below shows each mine's total daily production and the current number of miners at each mine.All miners work for the same wage, and each miner in any given mine produces the same number of tons per day as every other miner in that mine. Suppose Earth Movers & Shakers needs to fill an order for 100 tons of ore in a single day.If it has no other orders to fill that day, and it's not possible to transfer miners from one mine to another, it should:

A) take it all from Mother Lode.
B) take 75 tons from Middle Drift and 25 tons from Mother Lode.
C) take 75 tons from Middle Drift and 25 tons from Scraping Bottom.
D) take 30 tons from Scraping Bottom and 70 tons from Mother Lode.