Mayor: There has been a long debate in city council about how to accommodate projected increases in automobile traffic. Today, our choice is clear: either we adopt my plan to build a new expressway, or we do nothing. Doing nothing is not a viable option because our existing system of roads would be in gridlock within ten years given even a conservative estimate of future traffic levels. City council should ttherefore adopt my plan. The reasoning in the mayor's argument is most vulnerable to which one of the following criticisms?
A: It bases a projection only on conservative estimates rather than considering a wider range of estimates.
B: It takes for granted that the options it considers are mutually exclusive.
C: It presents a choice that is limited to two options, without giving reasons for not considering any other options.
D: It fails to address the issue of the cost of traffic gridlock to the city's economy.
Choose A, B, C or D as your solution.
C