The ratio in which the line segment joining the points whose position vectors are `2 hat i-4 hat j-7 hat ka n d-3 hat i+5 hat j-8 hat k` is divided by the plane whose equation is ` hat rdot( hat i-2 hat j+3 hat k)=13` is a. `13 : 12` internally b. `12 : 25` externally c. `13 : 25` internally d. `37 : 25` internally