Response A is better because it follows the prompt instructions, stays on topic, and provides clearer, more complete information about the core spiritual meanings of a blue rose. Response B is also helpful, but some of its added meanings are less central and slightly less well grounded.

Response A proves superior as it adheres to the given instructions, maintains focus on the subject matter, and delivers more comprehensive and precise information regarding the fundamental spiritual significance of blue roses. While Response B offers valuable insights, several of its additional interpretations are somewhat peripheral and lack the same solid foundation.