Johnson entered the defendant's store carrying her small child in an infant seat. When she tried to leave the store, she was stopped in a public place by a security officer who said that another employee had reported seeing her steal the infant seat. To show ownership, Johnson pointed to cat hair, food crumbs, and stains on the seat. After a 20-minute delay, the security officer apologized to the defendant and permitted her to leave. The trial court dismissed her action for false imprisonment, and Johnson appealed. Did the defendant have probable cause to detain Johnson, and was the 20-minute detention of Johnson reasonable in these circumstances?