In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".
Q: [header] How to nonverbally flirt with a girl [title] Smile at her. [step] Smiling can be very flirty and let her know that you're interested. Smiling is a way to appear open. <sep> (A) If you smile at her while giving her your full attention, then she'll have no problem flirting back. This is especially important for girls with oval faces like yours. (B) If you smile, she's more likely to mirror you and smile back. [substeps] A flirtatious smile might make eye contact or look at the girl, then look away while still smiling. (C) It will also show her that you're a genuine person and you want to be around her. It may also make girls think of you as a gentleman, as you play it cool when things get rough. (D) Just a simple smile can get her attention. This can make the girl appreciate your efforts and keep her from becoming annoyed.
A:
B