The correct option is B It symbolises that both countries wish to strengthen their relationship.
When any country minister visits another country on any important day like Republic day, its a sign of a goodwill gesture, it surely means they want to look forward together for mutual growth in economy or science or technology, etc. They can further go for a war together but it's optional, the meeting is not any symbol that both the countries are bound to join any personal or international war. It's mainly for mutual economic benefit.