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Find the points at which the following polar curve has a horizontal or a vertical tangent line.

`r=3+3sin\theta `

Identify the points where the curve has a horizontal tangent line. Select all that apply. A.

`((9)/(2),(11\pi )/(6))`

B.

`(6,(3\pi )/(2))`

C.

`((3)/(2),(11\pi )/(6))`

D.

`((9)/(2),(\pi )/(6))`

E.

`(0,(3\pi )/(2))`

F.

`(6,(\pi )/(2))`

G.

`((9)/(2),(7\pi )/(6))`

H.

`((9)/(2),(5\pi )/(6))`

`((3)/(2),(7\pi )/(6))`