In A B C, D and E are points on side A B and A C respectively such that D E B C and A D: D B=3: ...

In A B C, D and E are points on side A B and A C respectively such that D E B C and A D: D B=3: 1. If E A=3.3  cm, then A C=
(a) 1.1  cm
(b) 4  cm
(c) 4.4  cm
(d) 5.5  cm

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