Question: Let A = { < B,w > | B is a DFA that rejects the string w}. Suppose we are trying to construct a TM

Let A = { < B,w > | B is a DFA that rejects the string w}. Suppose we are trying to construct a TM M that decide A as follows:

M = "On input < B,w > where B is a DFA that rejects the string w:

  1. Do something
  2. Do some other things"

What is wrong with the above machine?

a.

It should be M = "On input < B,w > where B is a DFA and w is a string:..."

b.

It should be M = "On input < B,w > where B is a DFA that accepts the string w: ..."

c.

Nothing wrong with TM M.

d.

The input format is incorrect.

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