If \( \mathrm{BD}, \mathrm{BE} \) and \( \mathrm{CF} \) are the medians of a \( \triangle \mathr...
If \( \mathrm{BD}, \mathrm{BE} \) and \( \mathrm{CF} \) are the medians of a \( \triangle \mathrm{ABC} \) then \( \left(A D^{2}+B E^{2}+C F^{2}\right):\left(B C^{2}+C A^{2}+A B^{2}\right) \)
(a) \( 4 \cdot 3 \)
(b) \( 3: 2 \)
(c) \( 3: 4 \)
(d) \( 2: 3 \)
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