Which one of the following sequences indicates the correct chronological order?

Consider the following statements about Sikh Gurus:

1. Banda Bahadur was appointed as the military leader of the Sikhs by Guru Tegh Bahadur.  

2. Guru Arjun Dev became the Sikh Guru after Guru Ram Das.

3. Guru Arjun Dev gave to Sikhs their own script Guru Mukhi.  

Which of the statement(s) given above is/are correct?

Assertion(A): Muhammad Bin Tughlaq issued a new gold coin which was called Dinar by Ibn Battuta.
Reason(R): Muhammad Bin Tughlaq wanted to issue token currency in gold coins to promote trade with West Asian and North African countries.
Codes: 

Which one of the following is the correct chronological order of the Afghan rulers to the throne of Delhi? 

Bhakta Tukaram was a contemporary of which Mughal emperor?

Why did Buddhism start declining in India in the early medieval times?
1. Buddha was by that time considered as one of the incarnations of Vishnu and thus, became a part of Vaishnavism.

2. The invading tribes from Central Asia till the time of last Gupta king adopted Hinduism and persecuted Buddhists.
3. The Kings of Gupta dynasty were strongly opposed to Buddhism.
Which of the statement(s) given above is/are correct?