Which Is Not a True Statement

Which is not a true statement?

A) Regional dynamothermal metamorphism would occur where active mountain building is happening
B) Regional dynamothermal metamorphism refers to rocks that are deformed and heated simultaneously
C) Regional dynamothermal metamorphism is the least common type of metamorphism because it involves large-scale regional areas where mountain building has occurred
D) If you find a regional dynamothermal metamorphic rock such as gneiss, the sample will likely be foliated