Why caution against declaring “no liquefaction” from a lone CPT screen without corroborating tests?

Choices

• (A) Thin sand seams, layered fills, or perched water can dodge tip resistance trends
• (B) CPT correlations are infallible for every stratigraphy
• (C) Liquefaction never occurs in reclaimed ground
• (D) Groundwater depth is irrelevant once friction angles exceed thirty degrees