Directions: Study the following information carefully and answer the questions given below:

Rising concerns about pollution in major Indian cities have led to a dramatic increase in sales of home air purifiers. The air purifier segment, which was earlier limited to select pockets of top metro cities, is firming its foothold in smaller cities, and online channels are emerging as a key facilitator to meet the consumer demand in such places. “The onset of winters, smog situation in various parts of the country and the current concerns around air normally raise the alarm around deteriorating air quality and indoor air pollution. “An air purifier makes the most sense now, owing to the alarming levels of increasing air pollution in major cities around the country,” Eureka Forbes Managing Director and CEO Marzin R. Shroff said. New Delhi, which has been called the most polluted city in the world by the WHO, is not only the biggest buyer of air purifiers but is also the city that is seeing the fastest growth in sales of these devices.

Which of the following is/are definitely an effect(s) of the rising concern of pollution in the context of the passage?