右图中，若Q为自变量，P为因变量，在其他条件不变的情况下，下列各选项中变量之间关系与右图一致的是

①Q为小麦的价格，P为大米的需求量  

②Q为人民币汇率，P为中国出口总量

③Q为存款准备金率，P为社会总需求    

④Q为商品价格总额，P为货币发行量

A．①④

B．②③

C．①②

D．③④

She’s tired of acting, and she _______ changing for a new job, but she hasn’t made up her mind yet.

A．had considered

B．has been considering

C．considered

D．is going to consider