O is a point on a line AB and OC and OD are two rays on the same side of AB such that ray OC lies between rays OA and OD. If ∠AOC = 3y, ∠COD = 30° and ∠BOD = 5y, then the value of 4y + 10° is 

1
70°
2
75°
3
85°
4
90°

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