Solve the Problem $\frac { 1 } { 6 }$ B) $\frac { 1 } { 8 }$

Multiple Choice

Solve the problem.
-A couple plans to have four children. Using a tree diagram , obtain the sample space. Then, find The probability that the family has three boys first and then one girl.

A) $\frac { 1 } { 6 }$
B) $\frac { 1 } { 8 }$
C) $\frac { 3 } { 16 }$
D) $\frac { 1 } { 16 }$