Which Spanish cardiologist, born in 1905 in Barcelona, pioneered the technique of cardiac catheterisation and won the Nobel Prize in Medicine?

• A Santiago Ramon y Cajal
• B Gregorio Maranon
• C Severo Ochoa ✓
• D Jose Maria Carracido

Severo Ochoa was awarded the Nobel Prize in Physiology or Medicine in 1959 for his discovery of RNA polymerase.