问题详情

The author mentions the two high mountains in order to show that it is ______.
A．reasonable for Biarni to land precisely at his father"s home
B．possible to sail from Norway to Greenland without modern navigational equipment
C．likely that Biarni landed on America at least 100 years before Leif Erikson
D．probable that Leif Erikson followed the same course as Biarni