A project to build a fourth line in Prague’s Metro system will cost up to CZK 45 billion, the CEO of construction firm Metroprojekt, David Krása, told city officials on Wednesday. The price quoted would be for a D line from Náměstí Míru to Písnice; if the city opts for a shorter line starting at Pankrác the price will be CZK 33 billion, Mr. Krása said.