Given the task definition and input, reply with output. In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Among the entities, try to find the best entity that is most likely to fill in "_" and classify the answers based on options.

Choking smog may make you splutter, but it doesn't come close to the terror of Martian 'vog'. Scientists have found evidence of acid fog caused by volcanic eruptions on the Red Planet that's capable of devouring rocks. Nasa's Spirit rover detected signs of acidic vapour that caused rocks over 100 acres on Husband Hill in the Columbia Hills of Gusev Crater on Mars to go usually bumpy. A similar phenomenon is seen on Earth in Hawaii, where it is dubbed 'vog'. Planetary scientist Shoshanna Cole, an assistant professor at Ithaca College, New York, used a variety of data gathered by the rover's multiple instruments in 2003 to study the exposure of ancient bedrock on the planet.Experts found evidence of acid fog caused by volcanic eruptions on MarsUsed data collected by Nasa's Spirit rover in Gusev Crater on the red planetRocks were made 'bumpy' and less crystalline by acidic weatherSimilar phenomenon is seen on Earth in Hawaii, where it is dubbed 'vog' 
 Questions:When the _ vog touched the surface of the rocks, it dissolved away some of the minerals, forming a gel, according to the theory. (A) Martian (B) Red Planet (C) Nasa (D) Spirit (E) Husband Hill (F) Columbia Hills (G) Gusev Crater (H) Earth (I) Hawaii (J) Planetary (K) Shoshanna Cole (L) Ithaca College (M) New York (N) Rocks

(A)