The following sentence contains an introductory phrase:
Seriously I can lift an extra twenty pounds if I yell when I bench press!
Which revision correctly punctuates the sentence?
Select one:
O a. Seriously, I can lift an extra twenty pounds if I yell when I bench press!
O b. Seriously I can lift an extra twenty pounds, if I yell when I bench press!
Oc. Seriously I can lift an extra twenty pounds, if I yell, when I bench press!
O d. Seriously I can lift an extra twenty pounds if I yell, when I bench press!
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