India has recently launched Akashvani Maitree channel for the listeners from which of the following neighbouring countries?

President Pranab Mukherjee has recently launched Akashvani Maitree channel at Raj Bhawan in Kolkata, West Bengal for Bengali listeners. The channel is a unique venture of All India Radio (AIR) and is aimed to strengthen cultural, economic, political & emotional bonding ties between India and Bangladesh. It will be a common platform for blending content both from India and Bangladesh and preserving Bengali culture. The channel will be broadcast from a state-of-the-art brand new high power 1000Kw DRM transmitter with a capacity to reach the entire length and breadth of Bangladesh through medium wave and will be also available globally on its website and mobile app.