With Australian Government Banning Single Use Plastic, There Is a Shift

With Australian government banning single use plastic, there is a shift in preference by consumers for more environmentally- friendly alternatives. Therefore, there is an increase in variety of canvas bags, cotton fresh produce bags, coffee cups and metal straws offered by many retailers. This is an example of:

A) Joint demand.
B) Derived demand.
C) Inelastic demand.
D) Elastic demand.