Which of the following statements are correct?

A. A striking feature of Tughlaq architecture was the sloping walls called "batter"

B. It was used in all the buildings of the Tughlaq dynasty.

C. The Tughlaqs used only greystone in their buildings.

D. In the buildings of Firuz Shah Tughlaq, rubble is finished by thick coat of lime plaster which was colour washed

E. Decorative motif found in all the buildings of Firuz Shah Tughlaq is bell and chain.

Choose the Correct answer from the options given below: