What is the conditional statement of the sentence?

Question

For all real numbers a, b, and c, a = b implies that a−c=b−c.
A. If a, b, and c are real numbers, then a = b.
B. For all real numbers a, b, and c, if a = b, then a−c=b−c.
C. For all real numbers a, b, and c, if a−c=b−c, then a = b.
D. If a, b, and c are real numbers, then a−c=b−c.