Which of the following best describes a bull call spread? （ ）
A、Buyingacalloptionandsellinganothercalloptionwithahigherstrikeprice,bothwiththesameexpirationdate.
B、Buyingaputoptionandsellinganotherputoptionwithahigherstrikeprice,bothwiththesameexpirationdate.
C、Buyingacalloptionandsellinganothercalloptionwithalowerstrikeprice,bothwiththesameexpirationdate.
D、Buyingaputoptionandsellinganotherputoptionwithalowerstrikeprice,bothwiththesameexpirationdate.
发布时间：2025-10-13 11:36:39
