A marketing executive reaches his office by 9 AM (+5:30 GMT) in India

A marketing executive reaches his office by 9 AM (+5:30 GMT) in India.
He has to make a conference call to his colleagues sitting in different countries having different time zones as given below:
Kuwait (+03:00 GMT)
Finland (+02:00 GMT)
Moscow (+04:00 GMT)
Japan (+09:00 GMT)

At what time interval (According to India’s time zone) can he call his colleagues before lunch i.e. 1 pm (According to every one’s time zone)?

  • 9:00 AM to 9:30 AM
  • 9:30AM to 10:00 AM
  • 10:00 AM to 10:30 AM
  • 10:30 AM to 11:00 AM