Identify which following sentence contains weak and hedging expressions: A: By analogy, one can walk from one point in hilly country to another by a path which is always level or uphill, and yet a straight line between the points would cross a valley. B: Cases have been reported where this would have been the only possible method of transmission. C: Nowadays the urinary symptoms seem to be of a lesser order. D: Nowadays the urinary symptoms are of a lesser order.