Why Didn't Ming China Develop Seafaring for Commercial and Military

Multiple Choice

Why didn't Ming China develop seafaring for commercial and military gain?

A) The emperor feared outside contacts and influence.
B) The peasantry formed a strong voting lobby and refused to support it.
C) The merchants were opposed to losing their domestic markets.
D) The Mongol threat from the north took priority over seafaring.
E) The Japanese merchants undercut the market and stole China's trading partners.