Source: Master the GMAT 2012 Practice test1- Diagnostic Q27

Scientist and artist Vinci was, and always will be considered by many, as a singular figure among those whose scientific, artistic and other........

A. was, and always will be considered by many, as
B. was, and always will be considered by many as being
C. was, and always will by many, considered
D. was, and always will be considered by many as,
E. was considered by many and always will be by many

Considered as is a wrong idiom so I choose E. But I was wrong. Please help me with the right answer.