If the points \( P(3,2,-4), Q(5,4,-6) \) and \( R(9,8,-10) \) are collinear, then the ratio in w....

If the points \( P(3,2,-4), Q(5,4,-6) \) and \( R(9,8,-10) \)
\( \mathrm{P} \)
are collinear, then the ratio in which \( Q \) divides \( P R \) is
W
(1) \( 3: 4 \)
(2) \( 4: 3 \)
(3) \( 2: 1 \)
(4) \( 1: 2 \)