Two leading firms, Nirmala Textiles Ltd. and Swati Rayons Ltd., for years have been selling shirting, which is but a small part of both firms' total sales. The Marketing Director of Nirmala Textiles raised the question, "What should the firm's strategies be in terms of advertising for the product in question?" The system group of Nirmala Textiles developed the following data for varying degrees of advertising:

(a) No advertising, medium advertising and heavy advertising for both firms will result in equal market share.

(b) Nirmala Textiles with no advertising: 40 per cent of the market with medium advertising by Swati Rayons and 28 percent of the market with heavy advertising by Swati Rayons.

(c) Nirmala Textiles using medium advertising: 70 per cent of the market with no advertising by Swati Rayons and 45 per cent of the market with heavy advertising by Swati Rayons.

(d) Nirmala Textiles using heavy advertising: 75 per cent of the market with no advertising by Swati Rayons and 52.5 per cent of the market with medium advertising by Swati Rayons.

Based upon the above information, answer the marketing director's question