The correct answer is actually C. love for what he wants from her.

Here's why:

- Cupboard love refers to affection that is motivated by a desire for something that the person can get from the other, rather than genuine or selfless love.

In the context of the question:

- A. love that never falls is not opposite in meaning to cupboard love.
- B. genuine love actually contrasts with cupboard love, but since cupboard love is not genuine, it’s not the direct opposite.
- C. love for what he wants from her aligns with the concept of cupboard love, where the affection is based on what one can gain from the other.
- D. love that can fail in time of trouble describes a form of love that may falter but isn't necessarily the direct opposite.
- E. No love at all is not necessarily the opposite but rather a different state of affection.

Thus, C most accurately represents the concept opposite to cupboard love.