Refer to Urban Legends. When an employee at Coca$-$Cola received an e$-$mail that contended half a rat$$s body had been found in a bottle of one of its competitor$$s products, the employee forwarded the e$-$mail to everyone who worked in the Atlanta office. What kind of a grapevine communications network did this Coke employee use?

cluster chain

stratified chain

information overload

source diffusion

gossip chain