The line passing through the points $$(5,1,a)$$ and $$(3, b, 1)$$ crosses the $$yz$$-plane at the point $$\left( {0,{{17} \over 2}, - {{ - 13} \over 2}} \right)$$ . Then
- A$$a=2,$$ $$b=8$$
- B$$a=4,$$ $$b=6$$
- C$$a=6,$$ $$b=4$$
- D$$a=8,$$ $$b=2$$
✓ Correct answer: C
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