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A hole of area 1 cm² is opened on the surface of a large spherical cavity whose inside temperature is maintained at 727 ^oC. The value of Stefan-Boltzmann constant is 5.67 * 10^-8 W/m² - K⁴. Assuming black body radiation, the rate at which the energy is emitted (in W) by the cavity through the hole, up to 3 digits after the decimal point, is ________

4.7 to 4.9

5.6 to 5.8

7.3 to 7.5

1.2 to 1.4

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