can someone please exam how to answer this question?

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For what valu of erderieg cevil would is action be optmal? a) For what value of ordering cost worid is acton be optms? Fs aton woult be optimat gien an ordering coet of ; b) If the thio erdering ceet turns out ia be much oreater than your answer to part (a), what in the inpact on the fitm's ordereg folicy? A. The ender quatty stoud be increased. 8. The order qaribly should not be chanoed E. The oroer qumber strould be decornased