Which of the following statements correctly describe the verticals under the Pradhan Mantri Awas Yojana - Urban (PMAY-U) scheme aimed at providing housing for all in urban areas?

1. The Credit Linked Subsidy Scheme (CLSS) provides interest subsidies on home loans to economically weaker sections and middle-income groups for the purchase, construction, or enhancement of houses.
2. The In-situ Slum Redevelopment (ISSR) vertical aims to rehabilitate slum dwellers by using land as a resource through private participation, providing them with better housing facilities.
3. The Affordable Housing in Partnership (AHP) vertical solely focuses on the construction of rental housing units for migrant workers and students.