Problem $17.(1$ point$)$

$p^2(25p^2{q}^6{)}^{\frac{1}{2}}=$

$A.(25p^4{q}^6{)}^{\frac{1}{2}}$

$B.(25p^2{q}^8{)}^{\frac{1}{2}}$

$c.5p^3{q}^3$

$D.5p^4{q}^3$

$E.25p^4{q}^3$