Who is in group c when wisconsin is in group d?
CREATE TABLE table_19973 (
    "Region" real,
    "Group A" text,
    "Group B" text,
    "Group C" text,
    "Group D" text,
    "Group E" text,
    "Group F" text
)
SELECT "Group C" FROM table_19973 WHERE "Group D" = 'Wisconsin'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: Who is in group c when wisconsin is in group d? ### Input: CREATE TABLE table_19973 (
    "Region" real,
    "Group A" text,
    "Group B" text,
    "Group C" text,
    "Group D" text,
    "Group E" text,
    "Group F" text
) ### Response: SELECT "Group C" FROM table_19973 WHERE "Group D" = 'Wisconsin'