Systolic BP of a group of 200 people follows normal distribution. Mean BP is 120 mm Hg and standard deviation 10. Which of the following is true -a) 68% of people have BP between 110-130 mmHgb) 95% of people have BP between 110-130 mm Hgc) 95% ofpeople have BP between 100-140 mm Hgd) 99% of pepole have BP between 100-140 mm Hg