$14-$ Suppose we have data set with noise, in your opinion, which sequence we shall follow if are going to solve the classification problem.

a$.$ Feature extraction, data set enhancement, preprocessing, and using a classifier, respectively.

b$.$ Data set enhancement, Feature extraction, preprocessing, and using a classifier, respectively.

c$.$ Preprocessing, data set enhancement, Feature extraction, and using a classifier, respectively.

d$.$ Using classifier, preprocessing, data set enhancement, Feature extraction, respectively.