An Elderly Patient Who Has Been Living Alone and Has

An elderly patient who has been living alone and has gradually been losing weight has had a stroke and is transferred to a long-term care facility.It is unlikely that he will be able to achieve adequate oral intake during recovery,and so a percutaneous endoscopic gastrostomy (PEG) tube is inserted to begin tube feedings into his stomach.If the patient gains 8 lb in the first week of tube feeding,it is likely that

A) he is retaining fluid weight.
B) the tube feeding is well tolerated.
C) he is constipated.
D) the feedings are replenishing muscle and fat stores.