Rick James, a Missouri resident, gets a $10,000 loan from RB Bank to pay for his European vacation. Rick grants RB Bank a security interest in his 52-inch TV, all of Rick's after-acquired consumer electronics, and his salary as an employee at Commerce Bank. Seventeen days later, Rick buys an Xbox 360.

Which of the following is true?

1. RB Bank has a valid SI in in Rick's TV, his salary, and his Xbox.

2. RB Bank has a valid SI in Rick's TV and his salary, but not the Xbox.

3. RB Bank only has a valid SI the Rick's salary.

4. RB Bank only has a valid SI in Rick's TV.