powerlifting athlete

Hi,everyone. Please let me know ...
which of the following conversations is correct considering the picture?
A: What’s that a picture of?
B: It’s a picture of a powerlifting athlete.
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C: What’s that a picture of?
D: He’s a picture of a powerlifting athlete.
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E: Whose picture is that?
F: It’s a picture of a powerlifting athlete.
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G: Who is that a picture of?
H: It’s a picture of a powerlifting athlete.
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I: Who is that a picture of?
J: He’s a powerlifting athlete.
?