I-scream-4 Ice Cream recently faced competition against their flagship brand of "Orange peel ice cream." A competitor made significant in-roads into the market by offering three varieties of "Orange peel ice cream." I-scream-4 Ice Cream decided to counter this threat by introducing five new varieties of ice creams. Which competitive strategy is I-scream-4 Ice Cream implementing?
1) innovation focus
2) product differentiation
3) service focus
4) cost leadership
5) cost differentiation