use the paragraph to answer the question

Marcus was always boasting about his ability to play the piano. “ I’m the best there is!” he insist. However, when his music teacher finally insisted that Marcus take a seat on the piano bench to show off his abilities, the truth was revealed. Marcus had no idea how to play the piano! That was so embarrassing that Marcus decided to start taking lessons. In time, he actually became as good as he told everyone he was. However, no one believed him.

What statement describes the theme of this paragraph?

a. Hard work always pays great rewards.
b. Learning new things can be difficult.
c. A boy does not know how to play the piano.
d. People are not likely to trust someone who lies.

d. People are not likely to trust someone who lies.