Which of the following telescopes has recently helped to discover 300000 new galaxies?

A. Spitzer Space
B. Euclid
C. Hubble
D. LOFAR 

A new map of the night sky has been published and hundreds of thousands of previously undiscovered galaxies are on it. The 300,000 new galaxies were discovered as part of a study involving 200 scientists from 18 countries, using a Low-Frequency Array (LOFAR) telescope in the Netherlands.