Answer:
B because... ↓
Explanation:
"...well, just wait and see" is an interrupter, so you could use a comma or a dash.
tips: Maybe an elipises can be used. It can also be split up into two sentences.
Correct:
I am so happy that you got the job that I will... Well, just wait and see.
I am so happy that you got the job that I will---well, just wait and see.
Incorrect:
I am so happy that you got the job that I will well, just wait and see.
I am so happy that you got the job that I will. Well, just wait and see.
This is kind of an unnatural sentence to read and say, but I hope I helped ^_^
