When compare a star of magnitude -1 to a star of magnitude +1, which of the following is true：

a. -1 is 2.5 times brighter than +1

b.-1 is 2.5 times dimmer than +1

c.-1 is 6.25 times brighter than +1

d.-1 is 6.25 times dimmer than +1

are there any options you can choose from? ?

radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.

answerthe above statement is correct(true)