Choice Choice B is the correct answer.

1. Subtract 2x: $5 = 3$
2. Analyze: This is a contradiction (FALSE statement).
3. Conclusion: There is no value of $x$ that makes this true.

Choice Choice C is incorrect because substituting $0$ gives $5=3$, which is false.

Choice Choice D is incorrect because this is not an identity.

Choice Choice B is incorrect because substituting $2$ gives $9=7$, which is false.