f p,q, r are +ve and are in A. P., in the roots of quadratic equation `px^2+qx+r =0 ` are real for
A.` | (r/p)-7| >= 4sqrt(3)`
B `| (p/r) -7| >= 4sqrt(3)`
C. all p and r
D. no p and r
A. `|r/p-7| ge 4sqrt(3)`
B. `|p/r-7| ge 4sqrt(3)`
C. all p and r
D. no p and r