Given in each question are 4 sentences labeled A, B, C and D. Arrange these sentences to form a logically coherent paragraph.
A. The then system of education was designed so as to provide students with every possibility to earn a livelihood.
B. The history of education in India can be traced back to the Vedic age.
C. Gurukuls were the places where this was accomplished.
D. Teachers, in these institutions, treated all the students as equals.