Jake was nervous as he confronted Margot and said, "I want you to know something. I I love you."

What is the best way to punctuate the sentence to reflect how nervous Jake is?
A.
Jake was nervous as he confronted Margot and said, "I want you to know something. I! love you."
B.
Jake was nervous as he confronted Margot and said, "I want you, to know something; I love you."
C.
Jake was nervous as he confronted Margot and said, "I want you . . . to know something. I . . . I love you."
D.
Jake was nervous as he confronted Margot and said, "I want you to know something. I. I love you."