आठवीं शताब्दी के दौरान उत्तर-पश्चिमी भारत में अरब आक्रमणों को सफलतापूर्वक विफल करने का श्रेय ऐतिहासिक रूप से किस गुर्जर-प्रतिहार शासक को दिया जाता है?

According to the Gwalior Prashasti, which Gurjara-Pratihara ruler effectively stopped the Arab invasion beyond Sindh?

Consider the following statements regarding the 'Chanakya-Vigraha' policy of the Gurjara-Pratiharas: 1. It was a specific diplomatic strategy used by Vatsaraja to manage the Tripartite struggle. 2. The Gwalior Inscription credits Nagabhata II with reviving this policy against the Palas. 3. It involved the strategic use of 'Feudatory Buffer States' like the Chahamanas of Shakambhari. Select the correct code: