Find the Term That Should Be Added to the Expression $x^{2}+5 x+$

Multiple Choice

Find the term that should be added to the expression to form a perfect square trinomial. Write the resulting perfect square trinomial in factored form.
- $x^{2}+5 x+$

A) $0 ;(x+5) ^{2}$

B) $0 ;\left(x+\frac{5}{2}\right) ^{2}$

C) $\frac{25}{4} ;\left(x+\frac{5}{2}\right) ^{2}$

D) $\frac{25}{4} ;\left(x-\frac{5}{2}\right) ^{2}$