For dwellings that have a total of 100 units, how many must have a minimum of one accessible unit with a roll-in shower?

When considering accessibility requirements for dwellings, the Fair Housing Act and subsequent regulations outline specific guidelines for the number of accessible units required based on the total number of units in a building. For a dwelling with 100 units, the requirement specifies that there must be at least one accessible unit that can accommodate individuals with disabilities, including features such as a roll-in shower.

This guideline emphasizes the importance of inclusivity in housing, ensuring that a minimum number of units are designed to be accessible to individuals with mobility challenges. The requirement for a roll-in shower is a crucial feature for enhancing accessibility in restrooms, allowing for easier use by individuals who may utilize wheelchairs or have other mobility limitations.

Thus, for a building with 100 total units, the requirement mandates that at least one unit must include these accessibility features, making option A the correct choice. Other options suggest a higher number of units, which exceeds the minimum requirement stated by the regulations.