Consider binary search on a sorted array of numeric keys. The following options list possible sequences of key values that the algorithm might compare against the search target (in order of comparisons). Assume the keys `180`, `200`, `450`, and `500` are in the array and are ordered so that `180 < 200 < 450 < 500`. Which of the following **cannot** be a sequence of keys compared during a single run of binary search (for some target value) on some sorted array? Options: - A. `500, 200, 450, 180` - B. `500, 450, 200, 180` - C. `180, 500, 200, 450` - D. `180, 200, 500, 450`