It is a curious historical fact that modern quantum mechanic

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It is a curious historical fact that modern quantum mechanics began with two quite different mathematical formulations: the different equation of Schroedinger , and the matrix algebra of Heisenberg. The two, apparently dissimilar, approaches were proved to be mathematically equivalent.
Which of the following sentences would most meaningfully follow the above paragraph?

[MBA XAT 2015]

A The two approaches did not start with the same mathematical formulations

B These two points of view were destined to complement one another and were ultimately synthesized in Dirac’s transformation theory.

C A third mathematical formulation given by Feynman combines the matrix algebra of Heisenberg and Integral calculus of Leibniz.

D Quantum mechanics evolved in the twentieth century and came very close to particle physics, especially after the CERN experiments in Switzerland.

E Earlier, the two formulations were mathematically similar