Kindly explain why the answer is E

5 / 5 points The following table shows the utility (measured in dollars) which Lisa derives from water (in 50 litre drums) and diamonds (uncut 1 carat stones). Quantity Water Diamonds Total $Utility Total $Utility 500 150 700 290 800 420 -Nitinb 850 520 875 600 885 660 Refer to the above information to answer this question. If the price of both water and diamonds is $100 per unit, and Lisa has $500 to spend, how many units of each would she purchase? O A) 5 water. O B) 3 water and 2 diamonds. O c) 4 water and 1 diamond. O D) 1 water and 4 diamonds. VO E) 2 water and 3 diamonds