There are two different configurable products which both share one variation. The shared variation is represented by the same simple product. A customer added both configurables to the cart with the same selected variation?
How will they be displayed?
A . As two separate line items with quantity 1 each
B . As one line item which lists both configurable products with quantity 1 each
C . As one line item of the first product with quantity 2
D . As one line item of the second product with quantity 2
Answer: B
Explanation:
Reference: https://firebearstudio.com/blog/the-complete-guide-to-magento-2-configurable-products.html