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 bathe a pregnant guinea pig [title] Select a shampoo. [step] There are all types of shampoos for pets. For your guinea pig, make sure the shampoo is made specifically for small animals (it should say so on the bottle). <sep> (A) Otc shampoos and chemical shampoos are good choices. Avoid shampoo labeled specifically for guinea pigs and those formulated for females. (B) This way, both animals can use the shampoo and their fur will be clean. While many shampoos claim to free your guinea pig from " reye's syndrome ", this actually isn't true. (C) [substeps] Make sure that it is specially formulated for pregnancy-therefore not designed for your guinea pig. You can get shampoo from the veterinarian. (D) A small animal-specific shampoo will keep your guinea pig's skin from drying out or becoming irritated. Since your guinea pig is pregnant, the shampoo should also be non-medicated to prevent ingredients absorbing through her skin that could harm her unborn babies.
[A]: D

[Q]: A man is preparing to run and jump. he <sep> (A) runs very quickly down the track. (B) is doing a stunt, then dismounts to the ground. (C) releases the bar, and lands a few feet away. (D) is blindfolded and jumps full speed into the sand.
[A]: A

[Q]: [header] How to recover from a hamstring injury [title] Visit your doctor if the injury is severe. [step] Hamstring injuries are often minor, but they can be very serious. Sometimes the muscle tears away from the bone. <sep> (A) This can lead to staples dislocations and broken bones. Talk to your doctor before you exercise for signs of damage : [substeps] Blood in the urine: your urine could be infected with bacteria or cause unnecessary pressure to the affected area. (B) If the damage appears to be severe, that's a sign to get medical attention. [substeps] If the injury is spreading to specific parts of the tissue in the leg, he will have to provide you with an iv needle or x-rays to prevent it from spreading to other parts of the body. (C) You may have muscle that is simply no longer there or that is coming back. [substeps] If your injury is a muscle fracture, such as a sprain or fracture in the knee, you are at greater risk for complications. (D) Your doctor can make the best determination about your injury and provide you with a treatment plan. [substeps] See your doctor immediately if you hear tearing, experience extreme pain and swelling, or see bruising around the area.
[A]:
D