Let A B be the median of trapezoid R S T Q. R A equals A Q, and S B equals B T. R S = 54 and Q T = 86. Find A B.
Choices:
A:27
B:54
C:70
D:86
Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
Question: Let A B be the median of trapezoid R S T Q. R A equals A Q, and S B equals B T. R S = 54 and Q T = 86. Find A B.
Choices:
A:27
B:54
C:70
D:86
Please first conduct reasoning, and then answer the question and provide the correct option letter, e.g., A, B, C, D, at the end.
Question: Let A B be the median of trapezoid R S T Q. R A equals A Q, and S B equals B T. R S = 54 and Q T = 86. Find A B.
Choices:
A:27
B:54
C:70
D:86