问题详情

Accordingtothepassage,companiescanhavedifferentclassesofstockmainlybecausethecompanywants______.
A．tokeepthefinancialcostsatacertainlevel
B．tostillhavethecontroloverthecompany
C．tokeepthestockpricefromdropping
D．toattractmorecapitalfromthepublic

请帮忙给出正确答案和分析，谢谢！