Triangle QRS has the angle measures shown. begin mathsize 14px style m angle Q space equals space left parenthesis 3 x right parenthesis degree m angle R space equals space left parenthesis 4 x right parenthesis degree m angle S space equals space left parenthesis 8 x right parenthesis degree end style What type of triangle is begin mathsize 14px style increment QRS end style? A. acute B. obtuse C. right D. isosceles