The time average Poynting vector in W/m

1.	The time average Poynting vector in W/m
A.	<table><tr><td rowspan="2">-<br></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>2.4</center></td><td> </td><td rowspan="2"><br>a<sub>z</sub></td></tr> <tr><td style="text-align: center;"> </td></tr> </table>
B.	<table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>2.4</center></td><td> </td><td rowspan="2"><br>a<sub>z</sub></td></tr><br><tr><td style="text-align: center;"> </td></tr><br></table>
C.	<table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>4.8</center></td><td> </td><td rowspan="2"><br>a<sub>z</sub></td></tr><br><tr><td style="text-align: center;"> </td></tr><br></table>
D.	<table><tr><td rowspan="2"> - </td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>4.8</center></td><td> </td><td rowspan="2"><br>a<sub>z</sub></td></tr><br><tr><td style="text-align: center;"> </td></tr><br></table>
Answer» B. <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>2.4</center></td><td> </td><td rowspan="2"><br>a<sub>z</sub></td></tr><br><tr><td style="text-align: center;"> </td></tr><br></table>

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The time average Poynting vector in W/m

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