父母绿卡i-864

我在给父母申请绿卡，请教大家关于一个填i-864的问题。
question 24 b. Income you are using from any other person who was counted in your household size...,
I've listed my hu*****and's income as the answer. 家庭总收入是我和老公的工资总和。
question 24 d:The persons listed above have completed form i-864a. I am filing along with this form all necessary Forms i-864a completed by these persons.这是不是说我老公要填i-846a表？