Which statement is an example of the symmetric property of congruence?
A. If AKLM = APQR, then APQR = AKLM.
B. If AKLM = APQR, then APQR - ASTU.
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C. If AKLM = APQR, and APQR - ASTU, then AKLM - ASTU.
D. AKLM = AKLM
