a restatement question

[curious]

Question : What is the restatement of the following sentence? and could you please clarify the point?

Michael, having written a wonderful book on grammar, deserved to be called a Test Master.

a) Michael, after having written a wonderful book on grammar, deserved to be called a Test Master.

b) Michael, because he had written a wonderful book on grammar, deserved to be called a Test Master.

c) Michael, who had written a wonderful book on grammar, deserved to be called a Test Master.

d) Michael, as he had written a wonderful book on grammar, deserved to be called a Test Master.

e) Michael, when he had written a wonderful book on grammar, deserved to be called a Test Master.

[Coffa]

Question : What is the restatement of the following sentence? and could you please clarify the point?
Michael, having written a wonderful book on grammar, deserved to be called a Test Master.

a) Michael, after having written a wonderful book on grammar, deserved to be called a Test Master.

This is the correct answer.
The perfect participle indicates an action that takes place immediately after another. In this case, "deserving to be called a Test Master" takes place immediately after "writing a wonderful book on grammar." This is simply clarified in a) by "after".