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下列统计分析场景中，属于方差分析处理范畴的是（）。
(1)一批同种布料，采用6种工艺，每种工艺处理5块样本，获得布料缩水率，想要了解不同工艺对布料缩水率有无明显影响。
(2)有甲乙丙三种饲料，有ABC三个品种的肉鸡，每种各选300只，分成三组，分别喂甲乙丙饲料，想要了解不同饲料与不同品种对肉鸡的生长有无显著影响。
(3)某种材料的电阻服从正态分布，标准差为0.05。从新生产的材料中随机抽取9根，测得标准差为0.08。对于a=0.05，能否认为这批材料的电阻的标准差仍为0.05。

A 只有(1)和(3)

B 只有(1)和(2)

C 只有(2)和(3)

D 三种场景都是

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A 只有(1)和(3) B 只有(1)和(2) C 只有(2)和(3) D 三种场景都是

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A 只有(1)和(3)

B 只有(1)和(2)

C 只有(2)和(3)

D 三种场景都是