PLZ help me i will medal a person for the best response. Which sentence is the correctly written simple sentence?

A.
A tornado happens when a funnel cloud reaches the ground.

B.
A tornado is a violent storm; it forms from a rotating column of air.

C.
A tornado is a violent storm, and funnel clouds are rotating columns of air.

D.
A tornado is a violent storm, and it forms from a rotating column of air.

Question

PLZ help me i will medal a person for the best response.   Which sentence is the correctly written simple sentence?
 
 A.
A tornado happens when a funnel cloud reaches the ground.
 
 B.
A tornado is a violent storm; it forms from a rotating column of air.
 
 C.
A tornado is a violent storm, and funnel clouds are rotating columns of air.
 
 D.
A tornado is a violent storm, and it forms from a rotating column of air.

abhisar · Answer

You probably didn't notice but you posted your question in mathematics section. please repost it in correct section. Thank you :-)

rainbow_rocks03 · Answer

im going to the right place but i didn't know i was on math at first

abhisar · Answer

I know, it happens sometime :-)

rainbow_rocks03 · Answer

ty for being so nice @Abhisar

rainbow_rocks03 · Answer

i will give you a medal for that

abhisar · Answer

Pleasure is all mine ^_^