Which option uses subordination to combine the following sentences​? I downloaded the new software on Thursday. I spent Friday reviewing the basic features.
a. I downloaded the new software on​ Thursday, and I spent Friday reviewing the basic features.
b. I downloaded the new software on​ Thursday; ​moreover, I spent Friday reviewing the basic features.
c. I downloaded the new software on​ Thursday; I spent Friday reviewing the basic features.
d. After I downloaded the new software on​ Thursday, I spent Friday reviewing the basic features.