###Rationale: Hydrocephalus

Most common cause is Aqueductal stenosis
Macewen sign is cracked pot sound produced on percussion of skull in raised intracranical tension.
	"Sun set" sign of eyes seen.

###Answer: OPTION A IS CORRECT.
###Question: True statement about hydrocephalus is
###Options:
A. Macewen sign seen
B. Sun rise sign of eyes is seen
C. Most common cause is Dandy - waler malformation
D. All of the above
