
A.
1, 1 
B.
1, 2 
C.
1, 2 
D.
2, 2
Correct Answer: Option C
Explanation
x^{2} + 2(m + 1)x + m + 3 from (A + B)^{2} = a^{2} + 2AB + b^{2}
2B = (frac{2(m + 1)}{2}) = m + 1 …….(i)
Also B^{2} = m + 3……….(ii)
Subst. for B in equation ……….(iii)
= (m + 1)^{2} = m + 3 = m^{2} + 2m + 1 = m + 3
= m^{2} + 2m – m + 1 – 3 = 0
m^{2} + m – 2 = 0
(m + 2)(m – 1) = 0 or m – 1 = 0
m = 2 or 1