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 lower cholesterol fast [title] Start exercising. [step] Exercise improves how your body handles fat and cholesterol. But it is important that you start slowly and don't do more than your body can handle. <sep> (A) Gradually reduce your working hours in order to improve muscle health. [substeps] If you are an activity fanatic you may want to try jogging, swimming, rowing, cycling, or canoeing. (B) [substeps] If you have health conditions, don't pressure yourself too hard. Split between aerobic and cardio workouts for better results. (C) [substeps] Obviously, you should start with lifting weights that are not too heavy. This will tire you out a little, and add weight to your body. (D) Consult your doctor before beginning a new exercise program to make sure that you will be able to handle it. Then increase the intensity slowly over time working up to between 30 minutes to an hour per day.
D