以下植物中能形成种子，但不能形成果实的是（　　）

A

Mike works very long hours every day. He usually gets up at 17:00. He has a shower and makes his breakfast. What a funny time to make breakfast! After breakfast he practices his guitar. Then he puts on his jacket and goes to work. To get to work, he takes the number 17 bus to the Star Hotel. The bus usually leaves at 19:15. He works all night. People love to listen to him! He gets home at 7:00, and he watches the early morning news on TV. He goes to bed at 8:30, a tired but happy man. Can you think what his job is?

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材料一：我国宪法规定：“一切国家机关和武装力量、各政党和各社会团体、各企事业组织都必须遵守宪法和法律。一切违反宪法和法律的行为，必须予以追究。”

材料二：2017年12月4日是我国第四个国家宪法日，某校组织学生深入社区，大力开展宪法宣传活动，该活动着眼于维护宪法权威，使全社会进一步形成崇尚宪法，贯彻执行宪法的氛围。