Consider a Two-Period Binomial Tree Setting in Which the Up $\mathcal { U } > 1$

Consider a two-period binomial tree setting in which the up and down moves are given,respectively,by $\mathcal { U } > 1$ and $d < 1$ .The risk-free gross rate of interest per time step is $R$ .Suppose there is a dividend $D > 0$ paid after the first period of the tree. Let $C _ { 1 }$ denote the value of a one-period call that is initially at-the-money.Let $C _ { 2 } ^ { A } , C _ { 2 } ^ { E }$ denote the values of two-period American and European calls,respectively,that too are initially at-the-money.
Which of the following statements is always true regardless of the specific parameter values?

A) $C _ { 2 } ^ { A } > C _ { 2 } ^ { F } > C _ { 1 }$
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B) $C _ { 2 } ^ { S } \geq C _ { 1 }$
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C) $C _ { 2 } ^ { A } \geq C _ { 1 }$
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D) $C _ { 2 } ^ { A } > C _ { 1 } > C _ { 2 } ^ { F }$
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