If your credit card is stolen,

Which of the following sentences is most appropriate for written communication at work or with a customer? a)dude, i just know our new product will make you lol when i demonstrate it for : ) b)i’ll be happy to dog-and-pony a demo of our new xvg just as soon as we can get a space on the corpcal. c)i cannot tell you how i will be to hear from you, at any time that you choose to contact me, if you would like to spend any amount of time at our office or at your workplace viewing a thrilling demonstration of our spectacular new product. d) contact me when you’re ready for a demonstration of our new product.