The San Francisco Bay Area Was Once Surrounded by Extensive

The San Francisco Bay area was once surrounded by extensive tidal marshes, which were filled in for a variety of purposes, including building cities, factories, and other urban structures.These salt marshes once provided homes to many plants and animals and provided flood control and clean water to the human residents.These ecosystem services, lost when the marshes were drained and filled, belong to which ecosystem service category or categories?

A) Provisioning services only
B) Regulating services only
C) Supporting services only
D) Provisioning and regulating services
E) Regulating and supporting services