Answer
a
Work Step by Step
If we don't mix any of the .65/pound candy with the .49/pound candy, we would have candy worth .49/pound.
If we don't mix any of the .49/pound candy with the .65/pound candy, we would have candy worth .65/pound.
Thus, we have a range of values possible of .49 to .65. The only value between the minimum and maximum is .58.