Alam-Kuh, Iran's second-highest summit with a famous 800-metre granite wall, belongs to which massif of the Alborz?

• A The Sahand massif
• B The Takht-e Suleyman massif ✓
• C The Shirkuh massif
• D The Oshtorankuh massif

Alam-Kuh (4,850 m) in the Takht-e Suleyman massif is the 'Alps of Iran' for climbers.