A server responds with 'Content-Encoding: br'. What compression algorithm does this indicate, and what is its advantage over 'Content-Encoding: gzip'?

• A.'br' indicates Brotli compression, developed by Google; it typically achieves 15-25% better compression ratios than gzip for text-based web content, with similar or better decompression speed in modern browsers
• B.'br' stands for 'binary response' - an HTTP/2-specific binary framing format
• C.'br' is an alias for 'deflate' defined in RFC 7932
• D.'br' stands for 'buffered response' and delays delivery until the entire response is compressed; gzip content encoding is applied before TLS encryption specifically to defeat compression side channels like BREACH; a 429 response resets the client's TCP congestion window, which is the mechanism that actually slows the sender