[問題] 請教一題填空understatement用法

[clash (吃好多...)]

To say the actors were (i)_____ their director is an understatement:
a director who is visibly bored by his cast and their performances
is hard to (ii)_____.
(i)
A. disappointed in
B. accepting of
C. motivated by

(ii)
D. lambast
E. displease
F. suffer

考滿分是給BF
http://gre.kaomanfen.com/question/22k5dj.html

想請教一下第一格為什麼不能選A
我原本認知是understatement是同向但保守的說法
如果選B的話這個understatement感覺就帶有轉折語氣了
想請教一下版上前輩們的解讀!

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推 meinlvc     : 底下康老師的JJ包給的是BE，雖然詳解我也
→ meinlvc     : 看的不是很懂
推 meinlvc     : 老師有改為AF：如果說演員對導演的觀感很
→ meinlvc     : 失望,一點也不為過,因為一個只會明顯的嫌
→ meinlvc     : 棄 演員與其表演的導演很讓人難以忍受。
→ clash       : 感謝回覆！感覺AF跟BE都說的通
→ clash       : 不過BE比較難懂