Question

What is not a power of riptide from the lightning thief:

A. It turns from a pen to a sword
B. It cannot kill mortals
C. Even if lost, it will reappear to its owner
D. A bell rings when it is in use to call for help

Answer 1

The answer is D.

Step-by-step explanation:

I know this because I've read The Lightning Thief twice (I'm currently on the Titan's Curse.) It can turn from a pen to a sword, cannot kill mortals, and will always return to its owner, which is currently Percy Jackson.