A construction company is analyzing which of its older projects need renovation. Building B was built two years before building C. Building D was built two years before building B. The product of building B's age and building D's age is at least 195. If x represents the age of building C, which
inequality represents this situation?
A. x2 + 6x +8 _> 195
B. x2 +4x +4 _>195
C. x2+8x+16_>195
D. x2 +4_>195