Explanation:

- Option 1: K = 1MPC

- This suggests that the multiplier (K) is equal to the Marginal Propensity to Consume (MPC). However, it is incorrect in the context of economic multiplier formulas.

- Option 2: K = 1MPS

- This indicates the multiplier (K) is the reciprocal of the Marginal Propensity to Save (MPS), which is correct. The formula for the multiplier is usually K = 1/(1-MPC), and since 1-MPC = MPS, it simplifies to K = 1/MPS.

- Option 3: K = 11-MPS

- This could imply K is equal to a constant value 11 minus MPS, but it doesn't fit the formula used in economics.

- Option 4: K = 11+MPS

- Suggests K equals 11 plus MPS, which again is not typically relevant to calculating the multiplier.