Which of the following is/are offers as opposed to an "invitation to treat"?

Select all of the statements that are offers.

Question 3 options:

A)

A sweater displayed in the window of a shop with the price tag attached and showing

B)

An item listed on the Blue Pear Restaurant Menu as "Crusted Tuna with Arugula Salad - $18.99".

C)

The display of goods on the shelves of Safeway.

D)

An ad in a real-estate paper: "Best offer in South Calgary! 3 bedroom home in Shawnessy for only $450 000!"

E)

You tell your neighbour that you'll pay her $80 if she will stop singing in the