1. 8431. (1) Materials which are Skydrol compatible or resis tant include most common aircraft metals and polyure thane and epoxy paints. (2) Skydrol hydraulic fluid is compatible with nylon and natural fibers. Regarding the above statements, A. both No. 1 and No. 2 are true. B. neither No. 1 nor No. 2 is true. C. only No. 1 is true.