Riddle

Whipping one of these out in the wrong setting is said to be terrible luck.

Choose an answer

A.A black cat
B.A mirror
C.A ladder
D.An umbrella
Hint: It's a 2-word phrase with 10 letters, starting with "A".

Answer

An umbrella

Why this is the answer

Opening an umbrella indoors is a well-known superstition believed to bring bad luck.

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