(8 points) The figure below is a map of the surrounding areas of a city in North China Plain.
Read the picture to complete the following questions.
(1) Please arrange the production of flowers, orchards, dairy cattle, foodstuffs or cash crops rationally in areas A, B, C and D around the city.
(4 points) A, B, C, D.
(2) In the 1990s, the rural surrounding the city was originally a large-scale planted mulberry sericulture. After the international market price plummeted while the price of ginkgo biloba extract was optimistic, farmers destroyed the mulberry and ginkgo biloba.
This phenomenon illustrates the impact on the area of ??agricultural production and scale.
(2 points) (3) In order to protect the rivers flowing through the urban area from pollution, what should be paid attention to when developing agricultural production in the upper reaches of D?
(2 minutes)