An Outside Plant (OSP) Cable Must Be Placed Under a Pipeline

An outside plant (OSP) cable must be placed under a pipeline with two side by side pipe runs. The distance between the outside pipes is 6 m (20 ft) . What is the length of the conduit required to facilitate the pipeline crossing?

A) 6 m (20 ft)
B) 7.6 m (25 ft)
C) 9 m (30 ft)
D) 10.7 m (35 ft)
E) 12 m (40 ft)