Chinese Test: Does the Bird Love to Eat Vegetables?

Conversation:

Tom, gàn de búcuò a!
Alice: Tom, 干 得 不错 啊！

Wǒ zhǐshì yí ge càiniǎo, háiyào duōduō xuéxí la.
Tom: 我 只是 一 个 菜鸟， 还要 多多 学习 啦。

What does "菜鸟 (càiniǎo)" mean?

A. The bird likes vegetables
B. Green bird
C. Newbie