You receive an email prompting you to download “Antivirus 2010” software using a suspicious link.

Look at the website design, if it looks professional then it is a Real Antivirus website

Connect to the site using SSL, if you are successful then the website is genuine

Search using the URL and Antivirus product name into Google and look out for suspicious warnings against this site

Download and install Antivirus software from this suspicious looking site, your Windows 7 will prompt you and stop the installation if the downloaded file is a malware

Same as D (duplicated)