单项选择题

在国际站中，主图制作的大小建议是多少？
index],'fa-circle-thin':!data.stu.ansArr[$index]}" aria-hidden="true" style="font-variant-numeric: normal; font-stretch: normal; font-size: 24px; line-height: 30px; font-family: FontAwesome; padding: 0px; margin: 0px; overflow-wrap: break-word; display: inline-block; vertical-align: text-bottom; text-rendering: auto; -webkit-font-smoothing: antialiased; height: 30px; width: 30px; text-align: center; color: rgb(170, 170, 170); position: absolute; top: 0px; left: 0px; z-index: 1; cursor: pointer;"> A.
750*750
B.
500*500
C.
1000*1000
D.
0