Ann went to furniture store to buy a sofa. She saw one that she liked but did not like the colour. The owner of the store told her that they can redo it in a colour she liked. Ann paid for the sofa. Before they completed it a fire broke out at the store's shop and the sofa was destroyed. The owner does not want to return her money because he said the ownership had passed to Ann.

The ownership would not have passed based on:

Select one:

a. Rule 1

b. Rule 2

c. Rule 5