Choose the letter A, B, C or D to complete the sentences with given words

Thanh Giong Festival/ commemorate/ Saint Giong/, an imaginary/ hero/ the/ Vietnamese.

A. Thanh Giong Festival commemorates Saint Giong, a imaginary hero of the Vietnamese.

B. Thanh Giong Festival commemorates Saint Giong, an imaginary hero of the Vietnamese.

C. Thanh Giong Festival commemorate Saint Giong, an imaginary hero of the Vietnamese.

D. Thanh Giong Festival commemorate Saint Giong, a imaginary hero of the Vietnamese.