what is a type of conduit that has a wall thickness less than that of rmc but thicker than…

what is a type of conduit that has a wall thickness less than that of rmc but thicker than emt?\nhdpe\nimc\nlfnc\npvc
Answer
Brief Explanations:
Rigid Metal Conduit (RMC) has a thick - wall. Electrical Metallic Tubing (EMT) has a thin - wall. Intermediate Metal Conduit (IMC) has a wall thickness between that of RMC and EMT. HDPE, LFNC, and PVC are not metal conduits with this specific wall - thickness relationship.
Answer:
B. IMC