$($Refer to Figure $74,$ p$\mathrm{.}2-71,17$ statute miles South of Location #$6)$ You are conducting a small UAV mission in Redwood City, CA $($about $17$ statute miles south of Location #$6).$ What is the MAXIMUM altitude a passing aircraft must maintain, or be over, in order to conduct a fly$-$over in this area within the San Francisco $($Class B$)$ airspace?

$10,000\text{'}$ MSL

$10,000$ AGL

$2,500\text{'}$ MSL

$2,500\text{'}$ AGL