If two mutually exclusive alternatives have B/C ratios of 1.5 and 1.4 for the lower first-cost and higher first-cost alternatives, respectively: (choose one)
(a) The B/C ratio on the increment between them is greater than 1.4
(b) The B/C ratio on the increment between them is between 1.4 and 1.5
(c) The B/C ratio on the increment between them is less than 1.4
(d) The lower-cost alternative is the better one
B has a larger total cost than A, and B/CB < B/CA, then ?B/C < B/CB.
Answer is (c) The B/C ratio on the increment between them is less than 1.4
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