The following is a summary of selected transactions in the ledger accounts of Alberto$$s Plumbing Services for the current calendar year$-$end.

Common Stock

Transaction Debit amount Transaction Credit amount

$1/16,500$

Retained Earnings

Transaction Debit amount Transaction Credit amount

$12/313,50012/3115,000$

Dividends

Transaction Debit amount Transaction Credit amount

$3/301,65012/313,500$

$9/301,850$

Net income for the period is

a$.$ $$25,000$

b$.$ $$3,500$

c$.$ $$21,500$

d$.$ $$15,000$