Lin, female, 27 years old. Suffering from SLE for 3 years, the condition is unstable. There was no obvious cause of persistent severe headache, but the blood pressure was normal, no fever, clear consciousness, no abnormalities in head CT, and various analgesic treatments were ineffective. The best treatment that should be given to this patient's current symptoms is

A. High-dose hormone shock
B. High-dose CTX shock
C. Oral hormone increase
D. Intravenous mannitol
E. Non-steroidal anti-inflammatory drugs