The Chronicles of Thomas Covenant is a series of ten high fantasy novels written by American author Stephen R. Donaldson. The series began as a trilogy, entitled "The Chronicles of Thomas Covenant, the Unbeliever". This was followed by another trilogy, "The Second Chronicles of Thomas Covenant", and finally a tetralogy, "The Last Chronicles of Thomas Covenant".
Can we infer the following?
Donaldson wrote a tetralogy because he didn't want three trilogies

Choose from:
(i) Yes;
(ii) It's impossible to say;
(iii) No;
The answer is:
(ii)