Coronal Gas Emits X-Rays and Has Temperatures of ____

Coronal gas emits x-rays and has temperatures of ____.

A) 10⁶ K  o r  higher
B) more than 10⁴  K but less than 10⁶ K
C) 5000 K
D) between 1000 K to 5000 K
E) less than 500 K