Please Help

The data below is for the reaction sequence ABCD. Hint: Use the data to prepare a graph of the reaction profile and then answer the questions below. Your graph should be properly labelled and drawn to scale. Potential Energy Keaction progress (a) Whichof the following steps has the smallest rate constant? ABBCCD (b) Which of the following steps has the largest rate constant? ABBCCD (c) Which of the following steps is the rate determining step? ABBCCD (d) What is the enthalpy of reaction for the overall reaction? rH= kJmol1 (e) What is the activation energy for the overall reaction in the forward direction? Eafor= kJ mol1 (f) What is the activation energy for the overall reaction in the reverse direction