Which of the following is an angle subtraction postulate that can be derived from the angle addition postulate m∠QRS + m∠RST = m∠QRT?
Question 7 options:

A)

m∠RST = m∠QRT – m∠QRS

B)

m∠QRT = m∠RST – m∠QRS

C)

m∠QRS = m∠RST – m∠QRT

D)

m∠QRS = m∠RST