C-09-Q124mediumsingle_mcqFor f(x)=ln (a+xa−x)f(x) = \ln\!\left(\dfrac{a+x}{a-x}\right)f(x)=ln(a−xa+x), the domain is:aRRRb(−a,a)(-a, a)(−a,a)c(0,∞)(0, \infty)(