It is worth remembering the effort. It is the details that embrace the meaning. Due to the amount of effort expressed in this picture it should be acknowledged the meaning behind each character. Patience was built upon the love that each character was created behind this painting.
I strongly feel the answer should be A. Fresco was heavily used back in the day for murals especially on architecture to depict the lives and culture of the people of that time.
The Beetoven pieces and Mozart pieces are like the "shake it off" these days. Unlike some composers these composers were very popular and I may be hard to tell but Mozart used to be Katy Perry (joke because they both have weird hair.