In the triangle with height x, two acute angles are 45 and 30 degrees. One of a right-angle side is bisected by a line from the top vertex. Find x.
Choices:
A:4
B:4 \sqrt { 2 }
C:4 \sqrt { 3 }
D:8
Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
Question: In the triangle with height x, two acute angles are 45 and 30 degrees. One of a right-angle side is bisected by a line from the top vertex. Find x.
Choices:
A:4
B:4 \sqrt { 2 }
C:4 \sqrt { 3 }
D:8
Please first conduct reasoning, and then answer the question and provide the correct option letter, e.g., A, B, C, D, at the end.
Question: In the triangle with height x, two acute angles are 45 and 30 degrees. One of a right-angle side is bisected by a line from the top vertex. Find x.
Choices:
A:4
B:4 \sqrt { 2 }
C:4 \sqrt { 3 }
D:8