Which of the following statements are true regarding Patna Kalam style?

• A. This style based on watercolor started in the Mughal court around 1760.
• B. It was started by Nohar and Manohar, two artists of the court of Mughal emperor Akbar.
• C. There were three schools of painting in the 18th century – Mughal, Anglo-Indian and Pahari.
• D. all of the above