How much is accumulated in each of the following saving plans after $1$ year?a$)$ Saving $$100$ at the end of each month for $12$ months at $12\%$ compounded monthly.b$)$ Saving $$100$ at the end of each month for $12$ months at $12\%$ compounded quarterly.c$)$ Saving $$1,000$ at the end of this month at $12\%$ compounded continuously.d$)$ Saving $$60$ at the end of this month, increasing by $$5$ per month thereafter, at $12\%$ compounded monthly.