Multiply the Radical Expressions $( \sqrt { 11 } + k ) ^ { 2 }$

Multiple Choice

Multiply the radical expressions. $( \sqrt { 11 } + k ) ^ { 2 }$

A) $11 + 2 k \sqrt { 11 } + k ^ { 2 }$
B) $121 + 2 k \sqrt { 11 } + k ^ { 2 }$
C) $121 + k ^ { 2 }$
D) $11 + k ^ { 2 }$