US Immigration from Afghanistan

I am in the process of submitting I-864 for my parents and 4 siblings, 3 of them are minors.

Part 3 on this form is confusing me. Part 3 has three options to choose from as follows (attached):

I did submit a separate I-130 for each of my parents and siblings. I-130 was approved for my parents, I-130 for siblings is still pending. Reading question 1 to 3 in PART 3, i wouldn't know if siblings will even have their I-130 approved thus how would I know if they will immigrate more than six months, within six months, or at the same time. My educated guess is to answer YES with question 1. This is because question 2 says do not include any relative listed on a separate visa petition, each sibling and parent does have a separate visa petition. Is this correct?