Correct Answer - C
Let velocity components of point `B` are `upsilon_(x)` and `upsilon_(y)`. Along the length of rod, velocity of each point must be same (rigid body constraint)
`(upsilon_(x))/(sqrt(2))+(upsilon_(y))/(sqrt(2))=V/(sqrt(2))` (along rod `2`)
`(upsilon_(x))/(sqrt(2))-(upsilon_(y))/(sqrt(2))=0` (along rod `1`)
`upsilon_(x)=upsilon_(y)=V/2`