Use the following problem to answer the question below: 
 Given: m∠ABE = m∠CBD Prove: m∠ABD = m∠CBE 
 What is the reason for A, B, C and D?
 These are my guesses but i don't know if im right:
 A: given
 B: transitive property
 C: additive property of equality
 D: subtraction property of equality