Varion Air, an airline company, is providing promotional offers to mark its first anniversary. Its customers will be given a complimentary air ticket on the purchase of three business class tickets. In this case, which of the following is true of its promotional strategy?

It will not be effective as promotion does not apply to services.

It will satisfy the flyers and not the management of Varion Air.

It will work independently of the other three elements of the marketing mix.

It will increase the sales of Varion Air.