Possessing a Hoax Bomb is a crime when any device or package is used with the intent of making another person believe it is an explosive device or if it causes alarm or reaction by public safety officials.
Which situation below is the best example of a Hoax Bomb?
I. Greg has an eight-inch length of pipe filled with finely ground coffee beans and plugged with wax. He places it in his boss's locker at work and waits for her reaction.
II. Stuart is a postal worker and is picking up mail downtown when he thinks he hears ticking coming from a small box he retrieved from a corner mailbox.
III. Harriet is waiting in line at the airport to pass through the metal detector. Security personnel notice a small, pineapple-shaped metal object that looks like a hand grenade in her purse. It turns out to be a gift wrapped cigarette lighter.
IV. Ian is working on a project in the metal shop at school. The instructor notices that Ian is holding a softball-sized black hunk of material that appears to have a fuse trailing from the opening at the top. Ian tells him he was trying to make an oil lamp.

Question: 以下哪项是正确的？
Options:
A. I 为真, B. 以上各项均不成立, C. III 或 II, D. 仅 III, E. 仅 IV
Answer: A
True statement: I