9个月婴儿应接受下列哪项预防接种（）

A.卡介苗

B.脊髓灰质炎疫苗

C.百白破三联疫苗

D.麻疹疫苗

E.流脑疫苗

To save the drowning child，the boy plunged into the icy water without hesitation，_______his own safety．

A．despite of

B．regardless of

C．unaware of

D．because of