What Does Nussbaum Recommend, in Light of Concerns That Prostitutes

What does Nussbaum recommend, in light of concerns that prostitutes lack autonomy?

A) The claim that prostitutes lack autonomy is categorically false. Legalizing prostitution would do no harm, so we should do it.
B) We should work to increase appreciation for love and marriage. Legalizing prostitution is contrary to that aim, so we should not do it.
C) Autonomy is much less important than survival. Even though it would not promote autonomy, legalizing prostitution would promote survival, so we should do it.
D) We should work to increase the amount and variety of choices available to those with limited education and resources. Legalizing prostitution helps increase the amount and variety of such choices, so we should do it.