Identify the correct statement

Options

A. `lim_(xtooo)[sum_(r=1)^(n)1/(2^(r))]=1`
B. If `f(x)=(x-1){x},` where `[.]` and `{.}` denotes greatest integer function and fractional part of x respectively, the limit of `f(x)` does not exist at `x=1`
C. `lim_(xto0^(+))[(tanx)/x]=1`
D. `[lim_(xto0^(+))(tanx)/x]=1`

Answer

C, D