Rachel age 65 has begun establishing many different trusts

Question

Rachel, age 65, has begun establishing many different trusts. Of the following beneficiaries listed in her trusts, who would be considered a skip person for purposes of the GSTT?

I. Adam, age 25, her new husband

II. Bart, age 25, Rachel's grandson; Bart's father, Homer, is Rachel's son; Rachel and Homer are not on speaking terms

III. Carlisle, age 25, the pool boy

1. I Only
2. II Only
3. III Only
4. II and III only
5. I, II, and III