Based on this article, what was the relationship between Ala-ud-Din Bahman Shah and Alauddin Mujahid Shah?
Mohammed Shah I (reigned 1358–1375) was the second ruler of the Bahmani Sultanate, a late medieval kingdom of India. He succeeded his father Ala-ud-Din Bahman Shah. His reign was marked by a series of wars between his kingdom and two neighboring kingdoms, the Vijayanagara and the Warangal under Kapaya Nayaka. He was succeeded by his son Alauddin Mujahid Shah.
Alauddin Mujahid Shah was the grandson of Ala-ud-Din Bahman Shah by his son Mohammed Shah I.
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Mohammed Shah I (reigned 1358–1375) was the second ruler of the Bahmani Sultanate, a late medieval kingdom of India. He succeeded his father Ala-ud-Din Bahman Shah. His reign was marked by a series of wars between his kingdom and two neighboring kingdoms, the Vijayanagara and the Warangal under Kapaya Nayaka. He was succeeded by his son Alauddin Mujahid Shah.
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Based on this article, what was the relationship between Ala-ud-Din Bahman Shah and Alauddin Mujahid Shah?

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Alauddin Mujahid Shah was the grandson of Ala-ud-Din Bahman Shah by his son Mohammed Shah I.
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