Step 1: Define tribal family system.
The Munda tribe, predominantly in Jharkhand, follows a patriarchal family system, where lineage, property, and authority are traced through male members.
Step 2: Characteristics.
The male head manages family affairs, inheritance passes through males, and social roles are gendered.
Step 3: Conclude.
\[
\boxed{\text{Patriarchal (Option B) is the family system of Munda tribe.}}
\]