问题详情

Youareperformingtwosums,thefirstisasumoftwoscalarvariablesandthesecondisamatrixsumofapairoftwo—dimensionalarrays—size1000by1000.Whatspeedupisachievedwhenthecalculationsareperformedonsize1000processors？()
A．50
B．100
C．999
D．noneoftheabove
请帮忙给出正确答案和分析，谢谢！