Riddle

I am surrounded by wood, but I came from a mine. Everyone uses me.

Choose an answer

A.A luxury car
B.A wedding dress
C.A new house
D.Pencil lead
Hint: It's a 2-word phrase with 10 letters, starting with "P".

Answer

Pencil lead

Why this is the answer

A pencil contains graphite ('lead' from a mine) encased in wood (from a tree). It gets shorter as you use it.

This riddle is filed under Expert Riddles for Adults and rated Hard.