Select all true statement$/$s $($select all that apply$)$

in Defined$-$contribution plans, employers bear any financial risk, and employers have to contribute funds.

There is a higher administrative cost in a defined$-$contribution plan

In defined$-$contribution plans, employers may fully or partially match what their employees contribute but are not required to do so$.$

A defined$-$contribution pension allows the employee to set aside money into stocks, bonds, a diversified portfolio, or ether irrestment means.