Question 22 of 50 1 Points A correlation matrix of the relations among four variables appears below. What is the numerical value of the missing correlation (b) ? (Ignore the XX parts). X1 X2 X3 X4 X1 XX -0.42 0.75 0.93 X2 -0.42 XX 0.31 0.001 X3 0.75 0.31 XX -0.6 X4 0.93 0.01 -0.6 b O A. 0.00 O B. 0.001 C. 0.75 O D. 1.00 E. None of the above. Reset Selection >> Mark for Review.What's This? MacBook Dro