How can gain$-$sharing, as a short$-$term incentive, be described?

Group of answer choices

a$)$ It involves employees earning a percentage of what they sell, depending on the average lead time and difficulty of making the sale

b$)$ Group performance, in the form of increased productivity and resources saved by an individual or team, are returned to the group in some manner

c$)$ It is an organisation$-$wide pay$-$performance scheme that makes use of a formula to allocate pro rata portions of declared organisational profits to employees

d$)$ The incentive revolves around targets being set for employees, and the bonuses are usually large and meaningful to motivate employees