Consider the following statements:struct circleDatafloat radius;float area;float circumference;circleData circle;Which of the following statements is valid in C$++?$O a$.$ cin $>>$ circle.radius;circle.area $=3\mathrm{.}14*$ radius $*$ radius;b$.$ cin $>>$ circle.radius;cirele.area $=3\mathrm{.}14*$ circle.radius $*$ radius;C$.$cin $3$ circle;d$.$cin $>$ circle.radius;