What is the best way to punctuate the sentence to reflect a pause?

a. my heart was beating furiously when the announcer finally said, ". . and the winner is jodie briscoe! "

b. my heart was beating furiously when the announcer finally said, "and the winner is . . jodie briscoe! "

c. my heart was beating furiously when the announcer finally said, "and the winner is—jodie briscoe! "

d. my heart was beating furiously when the announcer finally said, ". . and the winner is—jodie briscoe! "