Rich owns stock in Little Corp. His adjusted basis for the stock is $$90,000.$ During the year, he received a distribution from the corporation of $$75,000$ that is a return of capital $($i$.$e$.,$ Little Corp ran out of earnings and profits $($E&P$).$ The $$75,000$ distribution is reported in box $3$ of form $1099$DIV. $($Show your calculations & explain$)$

a$.$ What are his tax consequences and adjusted basis of his stock after this transaction?

b$.$ Assume instead that the amount of the distribution is $$150,000.$ Determine the tax consequences and adjusted basis of the stock after the transaction.

c$.$ Assume instead that the $$75,000$ distribution is labeled a taxable dividend, reported in both boxes $1$a and $1$b of form $1099$DIV $($i$.$e$.,$ Little Corp has earnings and profits $($E&P$)$ of at least $$75,000).$ What are the tax consequences, and adjusted basis after the transaction?