详解
Choice B is correct. Multiplying both sides of the given equation by 4 yields (4)(4x+2) = (4)(12), or 16x+8 = 48. Therefore, the value of 16x+8 is 48.
Choice A is incorrect and may result from conceptual or calculation errors. Choice C is incorrect and may result from conceptual or calculation errors. Choice D is incorrect and may result from conceptual or calculation errors.