马某将收藏的一件明代瓷器出售给冯某，马某当场付清价金，约定马某．10天后交货。季某听说后，表示愿以双倍的价钱购买。马某当即决定卖给季某，约定第5天交货，并收定金若干。冯某所得出事，诱马某7岁儿子将瓷器从家中取出给她。对女瓷器所有权归属，下列判断正确的是：

A．冯某已取得瓷器的占有，可认为马某已履行合同，所有权归冯某

B．所有权仍属于马某

C．马某又卖给季某的行为有违诚实信用原则，宣认定无效，所有权属于冯某

D．因对季某的合同所约定的交货期限较早，故应属于季某

One of the guidelines in writing the C code for a software tool is as follows: write code that is as clear and as simple a (76) . The C language can be difficult to read if you combine all (77) features in a single statement. Break complicated (78) into several easy to understand statements for the (79) of readability. This style helps to make your programs more (80) and error-free.

A．readable

B．reusable

C．possible

D．semantic

E．syntactic

F．constructions

G．safe

H．impossible

I．sake

J．structure