35. Which is the most likely conclusion of the leading researcher? (A) Switching to a healthy diet has a positive effect on blood pressure. (B) Other factors such as regular exercise should also be taken into account. (C) Some strains of bacteria play mysterious role in human immune systems. (D) If a healthy diet is preceded by a fast, the positive effect is intensified. (E) The DASH diet is by far the healthiest way of living attested by science.