Why Did the Portuguese Reject Columbus's Proposed Route to Cathay

Multiple Choice

Why did the Portuguese reject Columbus's proposed route to Cathay?

A) They wanted Columbus to sail to India, not Cathay.
B) They believed that Columbus had underestimated the Earth's circumference.
C) They believed the Earth was round.
D) They believed that Columbus had no intention of reaching Cathay and was presenting a false route simply to gain monetary support.
E) They thought that Columbus would encounter too many hostile Indians on his proposed route.