In Young's double-slit experiment, if there is no initial phase difference between the light from the two slits, a point on the screen corresponding to the fifth minimum has a path difference:

1. A
   $\frac{5\lambda }{2}$
2. B
   $\frac{10\lambda }{2}$
3. C
   $\frac{9\lambda }{2}$
4. D
   $\frac{11\lambda }{2}$