Cadbury came up with new chocolate, Oreo silk. The bar is described as having a combination of crunchy biscuit and silky chocolate, taking the iconic sweet treat loved by all and adding a tasty cookie crunch. The brand is also launching packets of Cadbury Oreo Bites, which come with a crunchy Oreo filling, encased in a layer of chocolate. Identify the function of marketing in the above case.