—Which would you like to drink, coffee or orange juice?

—             . Please give me a cup of tea. [ ]

A. Neither

B. Both

C. A11

D. None

图中取A的竖向和水平支座反力为力法的基本未知量X₁（向上）和X₂（向左），柔度系数（）。

A．δ₁₁＞0，δ₂₂＜0

B．δ₁₁＜0，δ₂₂＞0

C．δ₁₁＜0，δ₂₂＜0

D．δ₁₁＞0，δ₂₂＞0