A Mosquito Flies Diagonally from a Corner at the Floor

Multiple Choice

A mosquito flies diagonally from a corner at the floor of a rectangular room,with coordinates (0,0,0) to the opposite corner at the ceiling,with coordinates (5.5,3.75,h) m at a rate of 0.8 m/s.If it takes the mosquito 11 seconds to make the direct flight,what is h? ​

A) ​5.8 m
B) ​6.7 m
C) ​8.5 m
D) ​8.3 m