There are (three) bottles of milk on the desk.(划线部分提问,划线部分为打括号出)

问题描述:

There are (three) bottles of milk on the desk.(划线部分提问,划线部分为打括号出)
There are (three bottles of) milk on the desk.(划线部分提问,划线部分为打括号出)
There are (three bottles of milk) on the desk.(划线部分提问,划线部分为打括号出)

How many bottles of milk are there on the desk?还有两个问题呢?