The definition of a proverb is best compared to ______.

A．Many experts on proverbs abandon the efforts to define a proverb.
B．It is impossible to tell others what makes a sentence a proverb.
C．A generally accepted definition of a proverb should caver all specifics.
D．Anyone can easily tell others what proverbs are.

A．Where there is a will, there is a way.
B．It is easy to recall instances of encountering a proverb.
C．It is not easy to define the word "proverb".
D．An accepted definition should cover all specifics of the word "proverb".