Question $33(5$ points$)$

$($a$)$ What is the name of the structure used to store a class instance?

$($b$)$ What is a vtable and how is it used to implement dynamic binding?

Question $34(4$ points$)$

What does the following Prolog program do$?$ Give all the answers Prolog would respond with for the query mystery $).$

mystery$([],$ List, List$).$

mystery$([$H $|$ List$1],$ List$2,[$H$|$List$3])$ :mystery$($List$1,$ List$2,$ List$3).$