The correct option is B The Golden temple is a gurudwara where only Sikhs can enter.
The Masand system taught Sikhs to donate towards social causes. Guru Hargobind Ji militarised the Sikhs so that the Mughals could not continue to harm them in the name of religion. The Adi Granth Sahib is the holy scripture of Sikhs. It is accorded the reverence given to a living guru. The Golden temple welcomes people from all religions, and this is what the four entrances of the temple signify.