Richard $(55)$ is a sole proprietor with two employees. He will make a $2\%$ nonelective contribution to SIMPLE IRA accounts for his employees and himself. Which statements is TRUE about Richard's contributions? $1)$ Richard may deduct employer contributions on his schedule C$,$ which will reduce his income tax and self$-$employment tax. $2)$ Richard is only required to contribute on behalf of employees that are making tax$-$deferred contibutions. $3)$ Contributions to employee accounts are an adjustment to income. $4)$ Because Richard is age $50$ or older, he may contribute an extra $ $6,000$ to his SIMPLE IRA.