Which of the following statements about DoubleSeventh Festival is NOT true?  
A、 This festival is in mid-summer when the weather is warm and the grass and trees reveal their luxurious greens.
B、   The origin of this festival is the story of Cowherd and Weaver Maid.   
C、 This festival is not yet a national intangible cultural heritage.
D、   Girls make needlework on this day.