Margaret is in the process of developing a message using the direct

$1$ point $$

approach to inform a customer that the company is currently all sold out of the AT$3$ model lawnmower that he wished to purchase. Which of the following lines would best form the opening lines of this message?

A$)$ The AT$3$ model lawnmower is the best$-$selling lawnmower in the market right now and a favourite of homeowners across the country.

B$)$ We regret to inform you that we are currently all sold out of the AT$3$ model lawnmower that you had requested.

C$)$ We are currently all sold out of the best$-$selling AT$3$ model lawnmower that you had requested.

D$)$ Summer is peak season for us and we usually see a marked spike in demand for our entire range of lawn mowers during this time; it's no different this time.