An Example of an Idea for a New Startup from an Accidental

An example of an idea for a new startup from an accidental discovery is

A) a coin collector,who bought and sold coins for years to build a personal collection,deciding to become a coin dealer.
B) a furniture salesperson seeing the possibility of opening a new furniture store in a different area of the city.
C) a sharpshooter,who shot holes in a pair of her boyfriend's jeans during an argument,hearing him get complimented on the way they look.
D) all of the above are examples.