The first Msjid (Mosque) that was built by the Holy Prophet (SAW) was_____________?

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The first Msjid (Mosque) that was built by the Holy Prophet (SAW) was_____________?

A. Masjid-ul-Haram
B. Masjid e Quba
C. Masjid-e-Aqsa
D. Masjid-e-Nabavi