Riddle

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

Choose an answer

A.MOM
B.DAD
C.RACE
D.NOON
Hint: It's a word with 4 letters, starting with "N".

Answer

NOON

Why this is the answer

The specific symmetry of these letters allows them to be read the same way.

This riddle is filed under Hard/Difficult Riddles and rated Medium.