32.層析圖相鄰二波峰之滯留時間分別為t1及t2，波峰底部寬分別為W1及W2，則此二波峰之分離解析度（resolution, Rs），以下列何式表示最恰當？
(A)Rs = 2(t2-t1)/(W2-W1)
(B)Rs = 2(t2-t1)/(W2+W1)
(C)Rs = 2(t2+t1)/(W2+W1)
(D)Rs = (t2+t1)/2(W2-W1)