Do you expect a soap molecule to be more or less soluble than a carboxylic acid with the same number of carbons?

Soap: [tex] \text{R-COO}^{-} \text{Na}^{+}[/tex]
Carboxylic Acid: [tex] \text{R-COOH} [/tex]

A. More soluble because the soap is an ion.
B. Less soluble because the soap is less polar.
C. More soluble because the soap has a higher molecular weight.
D. Less soluble because the soap has a higher molecular weight.
E. Less soluble because the soap is more polar.