How can I generate a report for a specific class

Question

I have a Selenium project that uses WebDriver. The project has 3 classes (testA, testB and testC) and couple of methods (eg. testAmethod, testBmethod, testCmethod). When I run TestNG with all three classes, I want to generate a report for testA results only. I can generate a report that shows results for all test classes, but I want to generate a report for a specific class (eg. testA) only while running all three classes in TestNG.