History · Vardhana Dynasty & Chalukyas

With reference to the political expansion of Harshavardhana, consider the following statements: I. Harshavardhana's military campaigns in northern and central India were largely successful, but he suffered a decisive defeat while expanding southwards into the Deccan. II. The confrontation between Harshavardhana and the Chalukya ruler Pulakeshin II occurred along the Narmada River, which became their southern boundary. Which of the statements given above is/are correct?