The initial rate of hydrolysis of methyl acetate (1M) by a weak acid (HA, 1M) is 1/100th of that of a strong acid (HX, 1M), at 25°C. The Ka of HA is:
a) 10⁻⁵ M
b) 10⁻⁴ M
c) 10⁻³ M
d) 10⁻² M