The correct answer is C. each other.
Ajay and Kajol are husband and wife. They both love each other. This means that they have a strong emotional attachment to each other and feel a deep sense of care and affection for each other. They are also committed to each other and to their relationship.
Option A, “for each other,” is incorrect because it suggests that Ajay and Kajol love each other for what they can do for each other, rather than for who they are. Option B, “made for each other,” is incorrect because it suggests that Ajay and Kajol are perfect for each other, which is not necessarily the case. Option D, “in each other,” is incorrect because it suggests that Ajay and Kajol are lost in each other, which is not a healthy way to be in a relationship.
In conclusion, the correct answer is C. each other.