单项选择题
which one of the following types of actions can be used on unopened doc?（）
A. form action
B. view action
C. hotspot action
D. db action
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whenrobertcreatedaresponseform.hesetthe"formulasinheritvaluesfromselecteddocument"optionontheformproperties,thefieldnameonthereviewformisthesameasthefieldnameontheinheritingform,howevertheformdoesnotinheritanydata,why?（）
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