costheta[(costheta, sintheta),(-sintheta...

`costheta[(costheta, sintheta),(-sintheta,costheta)]+sintheta[(sintheta,-costheta),(costheta,sintheta)]` is equal to (A) `[(0,0),(1,1)]` (B) `[(1,1),(0,0)]` (C) `[(0,1),(1,0)]` (D) `[(1,0),(0,1)]`

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