Sentence Correction (SC) | Maxwell’s theory of Electromagnetism in 1865 was the first

Maxwell’s theory of Electromagnetism in 1865 was the first “unified field theory”,with Electroweak in 1961 only being the other, because no further theory has united the electroweak field with either the Strong (Hadronic) force or Gravity.

A.with Electroweak in 1961only being the other, because
B.with Electroweak in 1961 being he only other, because
C. and Electroweak in 1961only was the other, because
D. and Electroweak in 1961only being the other, as
E. and Electroweak in 1961
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