You are a project manager for a small project. Your project was budgeted for ￥500,000 over a six-week period. As of today, you’ve spent ￥260,000 of your budget to complete work that you originally expected to cost ￥280,000. According to your schedule，you should have spent ￥300,000 by this point. Based on these circumstances, your project could be best described as ______.
A．ahead of schedule
B．behind schedule
C．on schedule
D．having not enough information provided