The correct answer is B. The patient has hyperlipidemia.
In acute pancreatitis, both serum amylase and lipase levels are typically elevated. However, in rare cases, serum amylase may be normal while serum lipase is elevated. This can occur in patients with hyperlipidemia, as high levels of triglycerides can interfere with the measurement of amylase. The milky appearance of the serum is also suggestive of hyperlipidemia, as it indicates the presence of chylomicrons.