What are two options for reducing the packet loss on this interface while preserving the end-to-end DSCP marking?

Refer to the exhibit.

CIP Implicit messages from I/O#1 are being marked IP DSCP 47 by the endpoint and this marking is trusted by L2SW4. L2SW4 is configured to map DSCP 47 to output queue 1 threshold 1. You have received feedback that some of these messages are not being received. Executing the show mls interface GigabitEthernet statistics command on L2SW4 results in:
L2SW4# show mls interface GigabitEthernet 1/1 statistics
<output omitted>
output queues dropped:
Repeating this command results in the counters incrementing for queue 1 threshold 1. What are two options for reducing the packet loss on this interface while preserving the end-to-end DSCP marking? (Choose two)
A. Configure I/O#1 to mark this traffic with a different DSCP that is mapped to a less congested queue
B. Increase the buffer allocation for input queue 1
C. Increase the buffer allocation for output queue 1
D. Alter the service policy to police to a higher CIR
E. Change the egress queue map on L2SW4 to map this traffic to a less congested queue

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