Q. The angles of depression of two ships from the top of a light house are 45° and 30° towards east. If the ships are 100 m apart, the height of the light house is

• (A) 50/(√3+1) m
• (B) 50/(√3-1)
• (C) 50(√3-1) m
• (D) 50(√3+1) m