Sandy owns a delivery van that she uses in her business. The van's FMV is $7,700, and the adjusted basis is zero. She trades it for Tim's light truck. Tim's truck has a FMV of $6,700, and the adjusted basis is $4,300. Tim also is offering $1,000 cash for the trade. Assume that the exchange is like-kind. What is Sally's realized gain?

a: $0

b: $1000

c: $7700

d:$6700

e:$8700

please show work so I can fully understand how to do the problem.