Sure, here is the SEO friendly HTML response for the question "What are the two components of Selenium RC?":

```html

Components of Selenium RC

In Selenium RC, there are two main components:

1. Selenium Server
2. Client Libraries

The Selenium Server acts as a bridge between the test script and the browser, while the client libraries provide an interface for writing and executing tests.

```

This HTML content provides a brief explanation of the two components of Selenium RC (Remote Control) in a format that is search engine friendly.