Let there be a spherically symmetric charge distribution with charge density varying as `rho(r)=rho(5/4-r/R)` upto `r=R`, and `rho(r)=0` for `rgtR`, where r is the distance from the origin. The electric field at a distance r(rltR) from the origin is given by
A. `(rho_(0) r)/(4 in_(0)) ((5)/(3) - (r )/(R ))`
B. `(4 rho_(0) r)/(3 in_(0)) ((5)/(4) - (r )/( R ))`
C. `(rho_(0) r)/(3 in_(0)) ((5)/(4) - (r )/(R ))`
D. `(4pi rho_(0) r)/(3 in_(0)) ((5)/(3) - (r )/(R ))`