If L1=Measurement taken after 24 hours of immersion in water at a temp. of 27 ± 20oC and L2=Measurement taken after 3 hours of immersion in water at boiling temperature. Then what is soundness of cement?

If L1=Measurement taken after 24 hours of immersion in water at a temp

1.	If L1=Measurement taken after 24 hours of immersion in water at a temp. of 27 ± 20oC and L2=Measurement taken after 3 hours of immersion in water at boiling temperature. Then what is soundness of cement?
A.	L1+L2
B.	L1/L2
C.	L1-L2
D.	L1*L2
Answer» D. L1*L2