Which of the following would be a prudent next step if there is NO clinical improvement after induction therapy for proliferative lupus nephritis?

A) Continue the current induction therapy regimen for an extended duration
B) Switch to a different class of immunosuppressive agents
C) Increase the dosage of the current induction therapy
D) Discontinue all immunosuppressive medications
E) Recommend lifestyle modifications and close monitoring without changes in medication