Should Division B students be able to perform cryptanalysis of The Rail Fence Cipher even though only Division C students should be able to encrypt/decrypt them?

Division B students should only expect to see Cryptanalysis of the Rail Fence cipher only on State/National competitions with an offset of 0 and a range for the rails and offset (3.h.vii) while Division C can expect to do a Decrypt of the Rail Fence Cipher for Regional tournaments given the number of rails and an unknown offset (3.g.v) and Cryptanalysis on State/National competitions with a range for the rails and either 0 for the offset (3.h.vii) or a range for the offset (3.i.iii).