如果網(wǎng)絡結點傳輸1M字節(jié)數(shù)據(jù)需要0.002s,則該網(wǎng)絡的數(shù)據(jù)傳輸速率為( ?。?br />A. 5GbpsB. 4GbpsC. 500MbpsD. 400Mbps