Question 15 (4 points) If R is the solid in the first octant bounded by the planes 3x + 6y + 2z =6, x =0, y = 0, and z = 0, then SSS f ( x, y, z ) dV = R O a) 1 2 - 2y 3- 1 / CO x-3y So So Jo f(x, y, z) dzdydx O b ) 10 / 00 N / - 3 so so x-3y Jo f(x, y, z) dzdydx Od josh fo f(x, y, z) dadydz O d) None of these