GMAT Test Prep: SC-66075336 GMAT Sentence Correction | TOEFL IELTS GMAT GRE SAT ACT PTE ESL

A is still mystified as to how the written word arose

B are still mystified as to how the written word arose

C are still mystified as to how the written word arises

D is still mystified as to how the written word arises

E is still mystified as to how the written word is arising