To serialize and write Python objects to a binary file, the pickle.dump() method is employed. This method requires the file to be opened in binary write mode, typically specified as 'wb'.
Attempting to use pickle.dump() on a file opened in binary read mode ('rb') will result in an error, as such files do not permit writing.
Consequently, Assertion (A) is accurate. Reason (R) is incorrect because pickle.dump() is for writing, not reading; the pickle.load() method is used for reading from binary files.
Therefore, option (C) is the correct selection.
