Active immunity may be acquired by

Which of the following is an autoimmune disorder?

Choose the true statements

$I.$ Innate immunity is accomplished by providing different types of barriers

$II.$ Acquired immunity is present from the birth and is inherited from parents

$III.$ Sweat, tears, acid in the stomach and saliva prevent microbial growth

Spleen is

Definitions / Explanation : $B$-lymphocytes & $T$-lymphocytes