Sentence Correction

Push for greater integration of global economy is not, like earlier, guided by complicated philosophical questions about the global fraternity, but the practical matters of business: cost savings and efficiency.
A. not, like earlier, guided by complicated philosophical questions about the global fraternity, but the practical matters of business
B. being guided by the practical matters of business, instead of complicated philosophical questions about the global fraternity, as it has been earlier
C. guided not by complicated philosophical questions about the global fraternity, as earlier, but by the practical matters of business
D. guided by the practical matters of business, not complicated philosophical questions about the global fraternity, which was the case earlier
E. guided not by complicated philosophical questions about the global fraternity, as has been the case earlier, but by the practical matters of business

[spoiler]OA: E[/spoiler]

I have a confusion between C and E
Differemce between c and E is that
C uses - 'as ealier' and
E uses - 'as has been the case earlier'.
Can you explain Why C is wrong or E preferred over C