All of the following are true about Alzheimer's disease?
A. Number of Senile plaques correlate with age
B. Underlying tau proteins suggest neurodegeneration
C. Number of neurofibrillary tangles is associated with the severity of dementia
D. Extracellular inclusions can be found in the absence of intracellular inclusion.

1. HLA B27 maximum association is with?
     A. Ankylosing spondylitis
     B. Rheumatoid arthritis
     C. Osteoarthritis
     D. Juvenile rheumatoid arthritis

1. Vitamin K is given to patient of jaundice but PT remains unchanged. The problem cause is
     A. Obstructive jaundice
     B. Cirrhosis
     C. Hemolytic jaundice
     D. Biliary atresia