|q⟩ Bad Qubits

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Multiple choice
Sum four results from the measurement postulates: (A) for ∣ψ⟩=cos⁡(θ)∣0⟩+sin⁡(θ)∣1⟩|\psi\rangle = \cos(\theta)|0\rangle + \sin(\theta)|1\rangle with θ=π/6\theta = \pi/6, p(1)=sin⁡2(θ)p(1) = \sin^2(\theta); (B) ⟨Z⟩=cos⁡2(θ)−sin⁡2(θ)\langle Z\rangle = \cos^2(\theta) - \sin^2(\theta) for the same state; (C) for (1/10)(∣00⟩+2∣01⟩+...)(1/\sqrt{10})(|00\rangle + 2|01\rangle + ...), after measuring q0 = 0 the conditional prob that q1 = 1; (D) ⟨Z⊗Z⟩\langle Z\otimes Z\rangle for (1/2)(∣00⟩+∣11⟩)(1/\sqrt{2})(|00\rangle + |11\rangle). What is A + B + C + D?