The nurse is administering warfarin (Coumadin) to a client with deep vein thrombophlebitis. Which laboratory value indicates warfarin is at therapeutic levels ？（）

A．Partial thromboplastin time (PTT) to 2 times the control.

B．Prothrombin time (PT) to 2 times the control.

C．International normalized ratio (INR) of 3 to 4.

D．Hematocrit of 32%.

“人性自私”观点的错误在于

A．不符合“人之初，性本善”的看法

B．违背人有追求自由、平等、幸福的天性

C．把人的自然属性当作人的根本属性

D．违背了“人的本质在其现实性上是一切社会关系的总和”的科学论断