20. if a = (2y +3)i + xzj + (yz - x) k then a- dr along the path x = 2t2; y=t; z =t from t=0 tot =1 is p and along the path c, the straight line joining (0, 0,

20. If A = (2y +3)i + xzj + (yz - x) k then A- dr along the path x = 2t2; y=t; z =t from t=0 tot =1 is P and along the path C, the straight line joining (0, 0, 0) and (2,1,1) is Q. Which statements are correct? (a) P Rational number Q = Rational number (b) P Rational number Q = Cube of any even integer (c) P Irrational number O= Cube of any odd integer (d) P = Irrational number Q = Irrational number