50. When you are in a safari vacation, the rule of thumb is to pack light. Your luggage may be limited to a small duffel bag, so try to limit your clothes to whatever is necessary. For example, bring enough clothes for two days only.______Then, you can dry the clothes in the sun.
Which of the followings is the most appropriate supporting sentence (to be put in the blank)?(A) Safari camps generally provide laundry service for you to wash the clothes by hand.(B) You should avoid wearing white clothes because it attracts animals' attention easily.(C) Black and other dark colors are recommended because they are less obvious when they get dirty.(D) The best way is to dress in layers as the areas can be chilly in the mornings and late afternoons.