(i) Area enclosed by two concentric circles with radius R and r respectively such that `Rgtr` is `pi(R^(2)-r^(2))`.
(ii) The lengths of tangents drawn from an external point to a circle are not equal.
(iii) There is one and only one tangent at any point on the circumference of a circle.
(iv) Ratio of the area of the sector of a circle with central angle `90^(@)` to the area of that circle is 1 : 4.

Options

A. `{:("(i)","(ii)","(iii)","(iv)"),(F,F,F,F):}`
B. `{:("(i)","(ii)","(iii)","(iv)"),(F,T,F,F):}`
C. `{:("(i)","(ii)","(iii)","(iv)"),(T,F,T,T):}`
D. `{:("(i)","(ii)","(iii)","(iv)"),(T,T,T,T):}`

Answer

C