Consider these compounds: A. Zn(CN)2
B. PbI2
C. CrPO4
D. CaSO3
Complete the following statements by entering the letter(s) corresponding to the correct compound(s). (If more than one compound fits the description, include all the relevant compounds by writing your answer as a string of characters without punctuation, e. g, ABC.)

Without doing any calculations it is possible to determine that silver iodide is more soluble than fill in the blank 1
, and silver iodide is less soluble than fill in the blank 2
.

It is not possible to determine whether silver iodide is more or less soluble than fill in the blank 3
by simply comparing Ksp values.