According to the passage, which of the following contributed to the deterioration of the asylum system Ⅰ. Lack of funds to maintain the asylums. Ⅱ. Influx of more patients than the system was designed to handle. Ⅲ. Lack of effective treatments for many mental illnesses.
A．Ⅲ only.
B．Ⅰ and Ⅱ only.
C．Ⅰ and Ⅲ only.
D．Ⅰ, Ⅱ, and Ⅲ.