Consider these compounds: A. FeCO3 B. PbF2 C. CrPO4 D. Zn(OH)2 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 zinc carbonate is more soluble than b , and zinc carbonate is less soluble than d . It is not possible to determine whether zinc carbonate is more or less soluble than ca by simply comparing Ksp values.