What is the main difference between the Brand Awareness and Engagement objectives?

What is the main difference between the Brand Awareness and Engagement objectives?A . Brand Awareness optimizes for ad recall white Engagement optimizes for likes/shares/comments B. Brand Awareness optimizes for likes/shares/comments,while Engagement optimizes for ad recall C. Brand Awareness optimizes for conversions, white Engagement optimizes for views D. Brand Awareness optimizes for views, while Engagement...