Selling a call option, called writing a call option, means you are giving someone else (the buyer) the right to buy an ETF at a specified price within a certain time frame. In exchange for this, you receive the premium that is paid by the buyer. Since you are giving someone else the right to buy the ETF at a specified price, if you don’t own the ETF (called “naked” call writing) and it rises in price considerably, you face infinite losses. At the same time, your profit is limited to the premium you received for writing the option. For those who want more, FiOS has a unique Custom TV plan. For $65 a month, you can choose one from seven genre-specific packages, including Sports & News, Kids & Pop, and Lifestyle & Reality. A sales analysis report shows a company's actual sales for a specified period -- a quarter, a year, or any time frame that managers feel is significant. In larger corporations, sales analysis reports may only contain data for a subsidiary, division or region. A small-business manager may be more interested in breaking sales down by location or product. Some small, specialized businesses with a single location are compact enough to use general sales data. A sales analysis report may compare actual sales to projected sales. An example of an external binary operation is scalar multiplication in linear algebra. Here K is a field and S is a vector space over that field.