A circular loop wire with current #I_1 = I_@/pi# and a V shaped wire with current #I_2# are arranged in a plane as shown in diagram. If magnetic field at O is zero, value of #I_2# is ? (a)#13aI_@/35r# (b)#12aI_@/17r# (c)#aI_@/r# (d)#12aI_@/35r#

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