finished product as packaging material

Dear experts,

Plz help. Many thanks.

Background: Product A is finished product and can be sold. Meanwhile, it can be used as packaging material for another finished product B. However, only B has selling price as customers only buy B.

Q1: Can product A be maintained as packaging material and finished product as well? Any impact on accounting?

Q2: If answer for Q1 is yes, can product A be used to create sales order together with B? You know, product A also need production. Production department want production requirements from sales orders (say Tcode MD04). Meanwhile, they're required to pack B with A before warehouse receives B.

Q3: If answer for Q1\2 is no, how to solve?