Which of the following pairs is/are correctly matched? Spacecraft : Purpose 1. Cassini-Huygens : Orbiting the Venus and transmitting data to the Earth 2. Messenger : Mapping and investigating the Mercury 3. Voyager 1 and 2 : Exploring the outer solar system Select the correct answer using the code given below.

Option (b) is correct because MESSENGER was the first spacecraft to orbit and map Mercury, while Voyager 1 and 2 were launched to explore the outer planets and have since entered interstellar space. Statement 1 is incorrect because Cassini-Huygens was a landmark mission dedicated to studying Saturn and its moon Titan, not Venus. The core concept tested is the identification of major interplanetary space missions and their specific celestial targets.