Given the task definition and input, reply with output. 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".

[header] How to use mayonnaise as a hair conditioner [title] Use full-fat mayonnaise. Regular, full-fat mayonnaise has the ingredients that nourish your hair and make it soft and silky. [step] Low-fat or fat-free mayonnaise is full of fillers that probably do your hair more harm than good. <sep> (A) Older people should choose full-fat mayonnaise as opposed to fat-loaded mayonnaise. It has been shown to help improve hair health. (B) Instead, opt for regular thick mayonnaise that has high amounts of added moisture. [substeps] Opt for commercial mayonnaise, which is high in salt. (C) Choose regular mayonnaise for best results. [substeps] Avoid mayonnaise that contains extra flavoring, such as herbs or spices. (D) Greasy mayonnaise contains allicin, which has a tendency to discolor your hair. This can make your hair dry out quickly, leaving you with black and grey dyed hair.
C