GMAT Sentence Correction (SC) | Re: With much success from writing the 10 Harry Potter books,

Hi expert,
I opt for option D with the following 2 reasons.

1)IMO,a person can't be worth.
Can we quantify person as in the correct choice?
Given that Joe has his asset worth $5 billion,we can say Joe worth $5 billion?

2)In option E,the use of present perfect is not to point out a particular event occurs before the other,but to indicate that this event started in the unspecified time in the past.
Is my understanding incorrect?

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