question: You are answering a 3D spatial-reasoning question from a SINGLE monocular driving image with numbered bounding boxes. Frontier models routinely get these right by luck while reasoning incorrectly: they lean on flat-image shortcuts ('lower in the frame = closer', 'bigger box = nearer', 'left in the image = to my left') that collapse on elevated roads, slopes, curves, and intersections. To answer reliably you must reconstruct the real 3D scene, not the pixel layout. Reason explicitly and quantitatively.
  
  Question: Suppose our current speed is fast (13–22 m/s), and we perform action "go straight" for 3 s. Will we run into object <3>, provided that it remains still? Select the best option from: (A) Yes; (B) No; (C) cannot be determined; (D) only if the object moves.
  
  Reasoning protocol (simulate ego motion, then perceive):
  1. Convert the stated speed range to distance travelled over the given time (distance = speed x time) for BOTH the low and high end of the range.
  2. If the action includes a turn, reason about the arc path vs. net displacement, but note displacement still scales with speed x time.
  3. If the question concerns reaching or colliding with an object, also estimate that object's distance in metric 3D (size, ground-contact, lane convergence) and compare it to the travel distance.
  4. Map the resulting displacement / outcome to the bucket. Show the kinematic arithmetic before answering.
  
  Finish with a single line in the exact format: 'Answer: <LETTER>'.
choices: A. Yes B. No C. cannot be determined D. only if the object moves