Difference between end item and parent item:

a$)$ There is no difference between the two since both have components.

b$)$ Both End items and Parent items refer to any company's finished product for that company, but the difference is parent item is also the final product to the consumer, but not necessarily the end item.

c$)$ Both End items and Parent items refer to any company's finished product, but the difference is that the end item is also the final product to the consumer, but not necessarily the parent item.

d$)$ The difference is the end item refers to the manufacturing company's finished product, while the parent item refers to the service company's finished product.

e$)$ The difference is the parent item refers to the manufacturing company's finished product, while the end item refers to the service company's finished product.