If the Statement Is True for All Sets C and D

question 61

True/False

If the statement is true for all sets C and D, write ʺtrue.ʺ If it is not true for all sets C and D, write ʺfalse.ʺ Assume that $C \not = \varnothing$ ,and $C \subset U$ .
- $\text { If } C \subset D \text {, then } C \subseteq D \text {. }$

---

Definitions:

Limestone

A sedimentary rock composed primarily of calcium carbonate (CaCO3) in the form of the mineral calcite, often formed from the skeletal fragments of marine organisms.

Sandstone

A sedimentary rock composed mostly of sand-sized minerals or rock grains.

Shales

Fine-grained sedimentary rocks formed from silt and clay particles, known for their ability to split into thin layers.

Salt Domes

Geological formations created when masses of salt are forced upward through overlying sediments, often associated with oil deposits.