At the Outside Wall the Roof Is 10 Feet High

Multiple Choice

At the outside wall the roof is 10 feet high.Also, 5 horizontal feet from the outside wall toward the interior of the room, the roof is 11 feet tall.What is the height of the roof 10 horizontal feet from the outside wall toward the interior of the room? ​

A) 12.10 feet
B) 14.55 feet
C) 15.22 feet
D) 12.00 feet