Apple Launched Its IPad in 2010 and in 2013 Introduced

Apple launched its iPad in 2010 and in 2013 introduced the 4^th generation iPad Air,as shown in the photo above.The iPad,along with its companion iPad mini,have become the world's best tablet devices with their multitouch user interfaces and the availability of hundreds of thousands of "apps." The product class has experienced tremendous growth in terms of sales and the addition of formidable competitors such as Samsung Galaxy,Google Nexus,Sony Xperia,etc.-all vying for market share.Which stage of the product life cycle are the iPad and other tablets in?

A) decline stage
B) commercialization stage
C) accelerated development stage
D) growth stage
E) introduction stage