A thun convergent glass lens (μ = 1.5) has a power of +5.0 D. when this lens is immersed in a iquid of refractive index μ₁, it acts as a divergent lens of local length 100 cm. the value if μ₁ is
A. 4/3
B. 5/3
C. 5/4
D. 6/5