Detailed Instructions: 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 make hair treatments [title] Raw egg yolks nourish and moisturize dry hair. [title] Coat damp hair (before shampooing) with 125 ml (or 1/2 cup) of egg yolk, and leave it on for 20 minutes. [title] Rinse off with cool water and shampoo as usual. <sep> (A) [step] This can be used once a month. [title] Massage 250 ml (1 cup) of natural yoghurt or sour cream into your scalp, the lengths and ends of your hair (after rinsing, before shampooing) and leave for 20-30 minutes. (B) [title] Underwash hair with bentonite (thinned hair) shampoo. [title] Using a mild product, massage the juice of 1 egg yolk into hair, and leave the mixture on your hair for 1 to 2 minutes. (C) [title] Once you have the egg yolk, slather a dime-sized amount of mousse into your hair. [title] Gently move the bowl of egg yolk into your hair while gently brushing against the side of the bowl. (D) [title] Wash hair with a pre-wash shower. [step] Your hair needs some time to absorb the egg yolk, so always rinse with cool water when your hair is wet.
A:
A