What is the difference between the Full Bayesian Approach and Empirical Bayes?

Select the most correct option from the below choices:

Question $1$ Answer

a$.$

There is no difference

b$.$

In the Full Bayesian Approach we apply Methods of Moments, whereas in Empirical Bayes we estimate our hyperparameters via maximum likelihood estimation.

c$.$

In the Full Bayesian Approach we estimate the hyperparameters using our full data set, whereas we pre$-$specify the hyperparameters in Empirical Bayes.

d$.$

In Empirical Bayes we do not use hyperparameters, whereas in the Full Bayesian Approach we do$.$

e$.$

In Empirical Bayes we estimate the hyperparameters based on our data, whereas in the Full Bayesian Approach these hyperparameters are pre$-$specified.