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Consider the planes p1: 2x+y+z+4=0, p2: ...

Consider the planes `p_1: 2x+y+z+4=0, p_2: y-z+4=0 and p_3: 3x+2y+z+8=0`
Let `L_1, L_2, L_3` be the lines of intersection of the planes `p_2 and p_3, p_3 and p_1, p_1 and p_2` respectively. Then.

A

at least two of the line `L_1, L_2 and L_3` are non parallel.

B

at least two of the lines `L_1, L_2 and L_3` are parallel

C

the three planes intersect in the line.

D

the three planes form a triangular prism.

Text Solution

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The correct Answer is:
(b, c)
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