Identify which is which
The very top one goes down 3 units from 0 to T1
The middle one down 6 units from 0 to T1
The very bottom one goes up 3 units from 0 to T1
Therefore since we can conclude that CO is the TOP one, H2 is the middle one and CH3OH is the bottom one
At T1, u get it so i will not discuss
At T2, since we know what the bottom curve is and suddenyl decreases, it means CH3OH has been removed
Hence answer is A